EINSEO Adjustable-Stroke Male Masturbator (7.8 in)

Motorised and hands-free, with a travel length you set yourself.

Up to 20 cm stroke
9 speed steps
2 sleeves
USB-C

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The rundown

The headline feature here is the stroke dial. Instead of a fixed travel distance, you choose how far the motor moves the sleeve, up to roughly 20 cm (7.8 in). Nine speed steps then take you from unhurried to brisk without changing anything else.

Two sleeves are bundled. One is open at the far end for an uninterrupted glide; the other is closed for a tighter, more sealed feel. Each has a 4 cm bore and is made from a soft, skin-like material. A handle keeps the unit steady, a built-in stand holds a phone, and an LCD shows the active mode and speed.

Summarised from the Amazon listing. Specifications change, so check the live page.

◻Image 6 · 1:1

What it offers

You set the travelDial the stroke length from short to a full 20 cm.
Nine speed stepsMove from slow and gradual to fast.
Open or closed sleeveTwo interchangeable sleeves change the sensation.
Handle and phone standEasier to hold steady and to watch something while you use it.
Quiet, readable displayLow-noise running and an LCD for mode and speed.
USB-C chargingAbout 3.5 hours for a full charge.
Comes apart to cleanDetachable parts; ships in plain packaging per the listing.

Spec sheet

Stroke: Adjustable, up to 20 cm (7.8 in)
Speeds: 9 thrusting speeds
Sleeves: 2 (open channel and closed channel)
Inner diameter: 4 cm
Screen: LCD
Charging: USB-C, about 3.5 h
Extras: Phone holder, ergonomic handle
Packaging: Plain, unmarked (per listing)

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Good fit if…

You want to control stroke depth, not just speed
You like swapping between two sleeve styles
You want a phone stand built in

Before you order

Checklist

Open the listing and read the materials and care notes
Check how it is powered and how long a charge lasts
Look for reviews that mention noise
Confirm which lubricant type the listing recommends
See whether the app features need an account
Read the return policy; intimate items are often final sale
Skim recent and low-star reviews, not just the average

Care and safety

Wash before and after each use; dry completely
Keep the motor unit out of water; only rinse parts the listing calls waterproof
Charge with the cable and adapter the listing specifies
Do not share without cleaning or using a barrier
Stop if anything hurts, goes numb or bruises
Skip it after alcohol or when very tired
See a doctor for erection problems or pain; these are not medical products

General information only. See the adult content and health notice.

Questions

Does it ship discreetly?

The listing mentions plain packaging. Confirm on the Amazon page and at checkout; we do not handle orders.

Can it be returned?

Intimate products often have restricted returns. Read Amazon's return terms on the listing first.

Where is the price?

We do not show prices. Tap any button here and Amazon shows the current price, stock and reviews.

Is this a medical device?

No. It is an adult recreational product. Ask a doctor about any health concern.

Ready for a closer look?

Photos, full specifications and verified customer reviews are on the Amazon listing.

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