Adults only · Product guide

EINSEO 7.8-Inch Adjustable Stroke Male Masturbator

A hands-free, motorised model with an adjustable 20 cm stroke, 9 speeds and two sleeves.

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Overview

This EINSEO model is a motorised, hands-free masturbator built around an adjustable thrusting stroke. You can set the stroke length up to 20 cm (7.8 in), so you control how deep the motion goes, and then pick from nine thrusting speeds, from slow and gentle to fast.

It ships with two interchangeable sleeves: one has an open, pass-through channel for a smooth continuous feel, and the other is closed for a snugger, more enveloping feel. Both have a 4 cm inner diameter and are made from soft material. A built-in phone holder, an ergonomic handle and an LCD for modes and speeds round out the design.

Summary written from the product's Amazon listing. Specifications can change, so check the live listing before you buy.

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Key features

What the listing says this product offers.

Adjustable stroke depth

Set the thrusting length to suit you, up to 20 cm.

9 speeds

Choose a slow, steady pace or a faster rhythm.

Two sleeve styles

Swap between an open channel and a closed channel for a different feel.

Phone holder

A sturdy built-in stand for watching videos hands-free.

Quiet with LCD

Low-noise operation and a screen that shows the current mode.

Easy care

Detachable design makes cleaning quick.

Specifications

Stroke length	Adjustable, up to 20 cm (7.8 in)
Speeds	9 thrusting speeds
Sleeves	2 interchangeable (open channel and closed channel), 4 cm inner diameter
Extras	Built-in phone holder, ergonomic handle
Display	LCD showing modes and speeds
Power	USB-C rechargeable, about 3.5 hours for a full charge
Cleaning	Detachable parts for easy cleaning
Shipping	Plain, unmarked packaging per the listing

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Quick buying checklist

Confirm the exact material and care instructions on the Amazon listing
Check how it is powered (rechargeable, battery-free) and how long a charge lasts
Read reviews that mention noise level if privacy matters
Check which lubricant is compatible, usually water-based, and avoid others if the listing says so
Check whether the app features need a phone and a sign-up
Look at the return policy, as intimate products are often non-returnable
Check shipping and packaging details shown at checkout
Read recent and low-star reviews as well as the average rating

Safety & care

Clean before and after every use and let it dry fully before storing
Do not submerge motorised parts in water, and only fill or rinse the parts the listing says are waterproof
Use the original charging cable and a suitable adapter as the listing directs
Never share personal toys without cleaning them properly or using a barrier
Stop if you feel pain, numbness, bruising or discomfort
Do not use after drinking alcohol or while very tired
Talk to a doctor about erection problems, pain or any health concern. These are not medical products

General information only. See our Adult Content & Health Disclaimer.

Frequently asked questions

Is shipping discreet?

The listing says it ships in plain packaging. Check the Amazon listing and checkout for the latest details.

Can I return it?

Return rules for intimate products can be strict. Check Amazon's return policy on the listing before you buy.

Where do I see the current price and reviews?

Use any button on this page. Amazon shows the current price, stock and customer reviews.

Is this a medical product?

No. It is an adult recreational product, not a medical device or treatment. Speak to a doctor about any health concern.

Ready to take a look?

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