Skip the Synchro Onahole: How It Compares to the A10 Series
- The Synchro Onahole (by Love Cosme)
- The A10 series (A10 Piston and A10 Cyclone)
Can't decide between the Synchro and the A10 series?
When I wrote this in 2022, if you wanted a stroker that synced with adult videos, those were really the only two choices. (As of September 2026, Adult Festa's list of supported toys also includes the ROCKET series.)
Choose carefully so you don't regret it.
Have you thought about how much the synced videos cost, and whether you'll still enjoy it months from now?
Buy on impulse and you may waste your money.
In this article you'll learn the following about the Synchro Onahole (an onahole is the Japanese word for a stroker sleeve):
- Its pros and cons
- Exactly how to buy synced adult videos and sync them in the app (with screenshots)
- Which online shop sells it for the lowest price
- What real buyers say
I'll be pointing out a lot of downsides, but if you know them before you buy, you won't end up regretting it.
My conclusion: the videos that sync with the Synchro Onahole are expensive, so in the long run the A10 Cyclone SA PLUS usually works out better — even in money.
A10 Cyclone SA: 10 Downsides and Bad Reviews (Does It Really Catch Hair?)An owner's honest VORZE A10 Cyclone SA PLUS review: 10 downsides, the bad reviews (yes, it can catch hair), and the good points compared with the A10 Piston SA.Read the article ›
A10 Piston SA Review: My Experience Plus the Good and Bad ReviewsMy honest VORZE A10 Piston SA review after months of use: the noise, the size, VR sync, the included sleeve, and the top good and bad user reviews.Read the article ›
What the Synchro Onahole and the A10 Series Have in Common
The Synchro and the A10 series have these things in common.
Most importantly, both can sync with adult videos.
| Synchro A10 series | |
| Syncs with adult videos |  |
| Controlled by an app | |
| Quiet | |
YesSynchro Onahole vs. A10 Series in One Table (5 Downsides)
Synchro | A10 series | |
| Price (2023) | ¥16,558 | ¥64,900 |
| Build quality | Low | High |
| VR video sync | Regular (non-VR) videos only | Yes, on Adult Festa |
| Number of synced videos | Few | 3,000–10,000 |
| All-you-can-watch plan | Single videos only: about ¥900–¥2,700 each | Adult Festa has paid unlimited plans (¥2,000–¥3,000 in 2022; e.g. ¥1,980/month in Sept. 2026) |
| How well videos sync | Poorly | Very well |
| Sleeve types | 2 types | 10+ types |
| Sleeve length | Short | Long |
| Movement | Monotonous | Lots of variety |
| Cleanup | Simple build, so easy | Takes some effort |
| Size | Compact | Large |
| Number of reviews | Few | Many |
| Product page | See it on FANZA | Official campaign |
Excellent Yes Partly NoAdded January 27, 2023: it looks like the Synchro is also planning to support VR.
The “A10 series ¥64,900” in the table above was the A10 Piston SA's price when I wrote this article.
As of September 25, 2026, the official NLS store sells the A10 Piston SA +PLUS for ¥49,800 and the A10 Cyclone SA +PLUS for ¥19,800.
That makes the A10 Cyclone SA +PLUS only slightly more expensive than FANZA's Synchro EX + Synchro Cup set (¥18,320).
Putting them side by side, the huge gap in quality really stands out.
Here's my comparison of the A10 Piston and the A10 Cyclone SA:
3 Upsides of the Synchro Onahole
[1] Lots of works that sync with voice audio
Among the works that sync with the Synchro Onahole there are also voice (audio) works, and they're very popular.
When I checked in September 2022, audio works were ranked #1 and #3 among the newest releases.
It's only a voice, but if you have a favorite voice actress, it's very tempting.
[2] Easy cleanup
The Synchro Onahole has a simple build, so compared with the A10 Cyclone SA PLUS cleanup after use is really easy.
To be fair, the A10 Cyclone SA PLUS sleeve can be turned inside out, so it's pretty easy too.
The A10 Piston's sleeve can't be turned inside out, so washing it is a pain.
VORZE's official FAQ says the Piston's official sleeve can be washed with water.
But it also says turning it inside out to wash it can damage it.
The machine itself isn't waterproof, so only wash the sleeve and the inner case with water.
💡 After washing, let them dry completely before putting them back in the machine.
[3] It's small
The Synchro Onahole is small enough to hold in one hand.
The A10 Cyclone SA PLUS is much bigger — about the size of a 1.5-liter bottle, which is just barely manageable in one hand.
According to VORZE's official specs, the A10 Cyclone SA +PLUS is 293 mm (about 11.5 in) long, and the machine weighs 1,400 g (about 3.1 lb) without the sleeve.
The A10 Piston SA +PLUS weighs 2,283 g (about 5 lb) for the machine alone.
Before buying, check its size and make sure you have room to store it.
7 Downsides of the Synchro Onahole
[1] It can't sync with a VR headset
The biggest downside of the Synchro Onahole is that you can't watch its videos in a VR headset (as of September 2022).
If you've never watched adult videos in a VR headset, you should try it right now.
For me, it was as big a shock as switching from a flip phone to a smartphone.
The strokers that sync with those adult VR videos are the A10 Piston and the A10 Cyclone SA.
As of September 2026, I couldn't confirm whether the Synchro now supports VR headsets.
On Adult Festa, which the A10 series uses, only 2 headsets are officially supported: the DPVR-4D and the DPVR-4D Pro.
For how to choose and connect one, see how to sync the A10 Piston SA with VR.
Nowadays there are strokers that sync with VR headsets — it would be a shame not to try one.
[2] Many reviews say the app keeps dropping the sync or won't sync at all
Here are some of the “can't connect” reviews left for Synchro Plus, the syncing app.
- It won't connect over Bluetooth
- Bluetooth keeps dropping, and then it says the battery is empty.
- It basically can't pair with Bluetooth at all
- The connection drops right away. It's just more junk.
- It connected once at first, but once it dropped it never found the device again — feels like a scam product
These “can't connect” reviews date from 2020 and were still appearing in 2022, so it seems the Synchro Onahole's connection problems haven't been fixed (as of September 2022).
There were about 10 reviews saying the same thing, so there are probably many more people having the same problem who never wrote a review.
On Amazon Japan, too, many reviews said the Bluetooth connection drops.
For a stroker whose whole selling point is syncing, not being able to sync is a fatal flaw, don't you think?
One reviewer said “pairing worked when I used Android 7,” so if you've already bought one, it may be worth a try.
“Never once lost their Bluetooth connection” above is my own experience.
The A10 series can fail to sync too if you connect it the wrong way.
If an A10 won't connect, connect it from the settings inside the app, not from your phone's Bluetooth settings (per VORZE).
Keep the devices within about 1 m (3 ft) of each other while connecting.
[3] Many reviews say it breaks
Looking at the Synchro Onahole's reviews on Amazon Japan, lots of people say theirs broke.
Here's one of them.
It feels good, but after only a few uses the motor started turning badly.
Did they even test this properly?
Would I buy it again? Honestly, I'm not sure…
By contrast, I rarely hear about breakdowns with the A10 Cyclone SA and its siblings.
The A10 series gets breakdown reports too — on X I saw a post saying a Piston SA +PLUS wouldn't move.
The Piston SA +PLUS and the Cyclone SA +PLUS come with a 3-month maker warranty from the date of purchase (VORZE official).
VORZE also does paid repairs after the warranty ends, but used or handed-down units are not covered.
Keep your receipt or order confirmation email.
If yours breaks, see what to do when the A10 Cyclone SA won't move.
To put it bluntly, the Synchro feels more cheaply made than the A10 series.
If that's the case, I think you're better off buying the A10 Cyclone SA PLUS.
[4] There aren't many videos
The biggest problem with having so few videos is that you may not find your favorite adult video actress.
If you can't find videos you like, you end up using it without syncing.
Even with the A10 series, a large number of synced titles doesn't guarantee you'll find ones you like.
Before you buy the machine, check that there are synced titles with your favorite actresses or genres.
The A10 Cyclone SA is very popular, so adult video studios will surely want to make more videos that sync with it.
In the end, the number of videos grows with the size of the market, and the A10 series is the popular one — so this gap in video numbers will most likely keep getting bigger over time.
[5] Few types of dedicated sleeves
There are only 2 types of dedicated sleeves for the Synchro Onahole, so you can't really adjust how it feels.
It's no exaggeration to say that how good a powered stroker feels depends on the sleeve you put in it.
The bumpy sleeve that came with my A10 Cyclone SA PLUS didn't feel good at all.
But when I bought a well-reviewed sleeve from the more than 10 types available, it felt dramatically better.
As of September 25, 2026, the official NLS store had 15 types of official sleeves for the Cyclone SA in stock, at ¥2,750 each.
The new “Mouth of Truth” sleeve is ¥3,410.
For the Piston SA, the sleeves were replaced in October 2025 by the 4 types of Sleeve 2.0 (¥2,970 each).
Most of the old Piston sleeves have been discontinued.
Best A10 Cyclone SA Sleeves: Top 3 Ranked (Medusa's Trap and Oral Reviewed)The 3 best VORZE A10 Cyclone SA PLUS sleeves ranked from NLS reviews: Oral, Spiral and Vortex compared on intensity, tightness, durability and care.Read the article ›
[6] The videos are expensive
Compared with Adult Festa, where the videos for the A10 Cyclone SA PLUS are sold, the videos for the Synchro Onahole cost more.
One video is split into several parts and sold separately, and some parts cost as little as ¥400.
But buy all 5 parts of one video and it can add up to ¥2,000 (prices as of September 2022).
On Adult Festa, videos are rarely split up, and you can often buy a whole video for under ¥1,000.
Comparing the same synced title, a video I could buy for ¥1,500 on Adult Festa was split into parts on the Synchro site, so I'd have had to pay ¥3,000 for the whole thing (September 2022) ↓↓
[7] You can only watch the videos on a smartphone
The Synchro Onahole's videos only play in its smartphone app, so you're stuck with a small screen (as of September 2022).
With a tablet you can at least enjoy a slightly bigger screen.
Adult Festa's videos for the A10 Cyclone SA PLUS, on the other hand, can also be played on a big screen such as a PC.
With the A10 series, you can sync while playing Adult Festa videos on a smartphone, a PC, or an iPad.
However, syncing doesn't work on a Mac (Adult Festa FAQ).
How to Buy Synced Videos and Sync Them in the Synchro App
Syncing with the Synchro works like this (as of September 2022):
- Buy synced videos on the dedicated site
- Sync the videos you bought with the Synchro Onahole
[1] How to buy adult videos that sync with the Synchro Onahole
Go to the video store through this link:
The site hardly shows up in search results, so if you buy on a PC, I recommend bookmarking it.
You can also get there by opening the Synchro Plus app on your phone and tapping the “Synchro official site” banner at the bottom, but it's a hassle ↓↓
↑ Because tapping it just sends you to Twitter.
You have to log in to Twitter and follow the link in the Synchro account's profile to reach the video site.
Note that you can't get there without a Twitter account.
Use this link instead ↓↓
First, sign up using the button below.
There are a lot of fields to fill in, which is pretty tedious.
Once you've signed up, buy points. 500 points cost ¥550 (September 2022) ↓↓
Choose the points you need, enter your credit card, and you're ready to buy.
Next, here's how to watch the video you bought and sync it.
[2] Install the Synchro Onahole app and sync the video
I'll show it with Google Play, but it's almost the same on the App Store. Search for “Synchro Hole” (in Japanese). Note: as of September 2026, Love Cosme's official product page says the Synchro Android app temporarily can't be installed from Google Play, with no date given for when that will be fixed.
Open the Synchro Plus app.
Log in with the same ID you used to buy the video, and your purchases will show up in the app too.
Tap Library ↓↓
Your purchased videos appear. Pick the one you want to watch and tap the download button.
Before the video starts, choose Manual, Auto, or video only.
To sync automatically, choose “Auto.”
When it asks “Pair with the device?”, switch on the Synchro and tap “Yes” — that's it, it's synced.
If pairing doesn't work, you'll see “Pairing failed.”
My Review of the Synchro Onahole's Video App
I compared it with Adult Festa, the video site that syncs with the A10 Piston.
The app itself felt light and fast.
It's also handy that remote control of the Synchro and the video player are in one app.
But the official Synchro video site made videos hard to find.
And for some reason, getting from the app to the video store goes through Twitter first, which is really annoying.
Like on Adult Festa, it's much easier to look for your favorite adult videos on a big PC screen.
Finding synced videos of your favorite actresses in the Synchro app is the heart of owning a synced stroker.
If that part is hard to use, it's a real pain.
Where Can You Buy the Synchro Onahole for the Lowest Price? (2023)
I checked whether well-known Japanese adult shops sell the Synchro Onahole (in 2023).
| Synchro official | NLS | Amazon Japan | Rakuten | Otona no M's | FANZA | Nobunaga TOY | Tsuhan Daimaou |
| ¥16,558 | Not sold | ¥18,330 | Not sold | Not sold | ¥18,320 (Sept. 2026) | Not sold | Not sold |
The Synchro official site is the cheapest place to buy it. (That official shop has since closed, in June 2026.)
Update (September 2026)
You can now buy the Synchro on FANZA too.
The Synchro EX + Synchro Cup set was ¥18,320 and in stock (checked September 24, 2026).
The table above is from 2023, so the other shops' prices may have changed.
On Amazon, the fee the maker pays is simply added to the price, so it costs more.
Back then, buying from the official site, where you could reach them by chat or phone, also seemed safer in case you ever needed a return.
The official site sometimes ran time-limited sales, and you could occasionally get it for more than ¥2,000 off (2023).
The official site also ran limited-time campaigns like this one (2023).
Even if you're thinking of buying on Amazon Japan, always check the official site first, or you'll lose money.
Update (September 2026)
Before you buy on Amazon Japan, also check the price and stock on FANZA.
Is It Risky to Buy the Synchro Onahole on Amazon Japan?
It costs more than on the official site, so I don't recommend it in the first place.
Update (September 2026)
You can now buy it on FANZA as well, so compare the price with Amazon before you decide.
With an Amazon box, a family member might think the parcel is theirs and open it.
Is the Synchro Onahole Sold on Rakuten?
I searched Rakuten (a big Japanese marketplace) for “Synchro Hole” and “Synchro Onahole” (in Japanese) and got the same results both times, shown below.
I also tried “Synchro” and “Onahole” as two separate words, but the product still didn't come up.
Conclusion: the Synchro Onahole is not sold on Rakuten (as of 2023).
A search on September 25, 2026 without logging in isn't enough to say for sure that it's “not sold on Rakuten,” as I wrote above.
Adult products only show up after age verification.
If you look for it on Rakuten, check the listings after verifying your age.
How to Buy Replacement Sleeves for the Synchro Onahole
Replacement sleeves for the Synchro Onahole were sold on the official site and on Amazon Japan (2023). As of September 2026, the standard replacement sleeve is still sold on the Love Cosme official site.
However, Amazon only had one of the two types of dedicated sleeves.
- Amazon Japan: ¥3,000
- Official site: ¥2,145
The official site is cheaper.
Update (September 2026)
On FANZA, a Synchro Cup costs ¥1,430, a 3-pack ¥3,290, and a 5-pack ¥5,000 (checked September 24, 2026).
They're popular and often seem to be out of stock…
As of September 24, 2026, every Synchro Cup on FANZA was in stock.
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