F2S Double Sonic Waterproof Masturbator by LELO

Dual sonic motors at each end of this stroker deliver wave sensations along the full length of your penis, adapting to your stroke. Thirteen modes, sixteen intensity levels, and app-connected AI features let you train stamina and explore a realistic, customisable experience.

What it does

Two sonic motors positioned at either end of the stroker create wave sensations that travel the full length of your penis. They respond to your stroking motion and preferred mode, adapting in real time to deliver a realistic feel. Thirteen distinct pleasure modes give you plenty of variation—eight built-in options plus five exclusive modes accessible through the app. SmoothRise technology transitions smoothly through sixteen intensity levels, so you can tease gently or build to powerful stimulation without jarring jumps.

Connect to the LELO app to access Humanize mode, which weaves subtle, organic variations into the rhythm and intensity of both motors working together. This prevents the sensory flatness that comes with perfectly repetitive machines, making each session feel more authentic. AI mode uses a built-in sensor to sync vibrations with your unique rhythm as you stroke, learning and adjusting on the fly. For those wanting to build staying power, guided stamina training with Kegel exercises is built in. Masturbators And Pumps range from basic hand strokers to app-connected, multi-motor designs like this one.

Specifications

• Materials: Body-safe silicone, ABS plastic, aluminium alloy
• Length: 140 mm (5.5 inches)
• Diameter: 82 mm overall; inner diameter 34–45 mm (1.3–1.77 inches)
• Weight: 360 g (12.7 oz)
• Modes: 13 total (8 built-in, 5 app modes)
• Intensity levels: 16 settings
• Charging time: Up to 2 hours
• Runtime: Up to 2 hours per charge
• Waterproofing: 100% waterproof
• Safety: ISO 3533 certified

Getting the most from it

Start with a lower intensity and shorter stroking pace to feel how both motors respond to your movement, then experiment with different modes and settings as you build confidence. Humanize mode works best when you vary your own tempo—let the subtle imperfections in the motor rhythm sync with your natural rhythm rather than fighting it. Use the app's AI mode without preset patterns; the stroker will learn and adapt to the pace you naturally settle into, making stamina training feel less like a workout and more like genuine sexual feedback. Take time to explore each mode fully before jumping around. Cockringshop specialises in products for men and couples seeking real performance gains and genuine sensation.

How to use it

Apply water-based lubricant generously to the inner chamber and your penis before insertion. Start gently, allowing the stroker to warm up and the motors to sync with your movement. You can hold it still and thrust through it, or grip it and stroke along your length—both approaches will engage the dual motors differently. Experiment to find which suits your body and your preferred rhythm.

During use, let the AI mode learn your natural pace if you have the app connected; the stroker will adjust intensity without you having to fiddle with buttons mid-session. After use, run warm water through the chamber, allow it to air-dry fully, then store it in a cool, dry place away from direct sunlight. The premium silicone feels smooth and supple to the touch, and withstands regular washing without degradation.

Feature breakdown

Who it suits

This stroker is ideal for men who want app-connected feedback and appreciate learning features—especially those interested in stamina training and exploring how a sex toy can adapt to their body rather than the other way around. If you enjoy varying sensation and dislike repetitive, monotonous patterns, Humanize mode will appeal to you. Solo users who want realistic feedback and couples incorporating sex toys into partnered sex will both find genuine value here. Men with moderate to high grip strength and moderate to larger penis girth will find the 34–45 mm inner diameter accommodating.

Skip this if you prefer a simpler, app-free experience or if you want something ultra-discreet and pocket-sized—at 360 g and 140 mm long, it is substantial and requires charging and app setup. If you are after a basic, durable hand stroker without smart features, a standard silicone stroker will be more straightforward and cheaper. Those with very sensitive skin should test the silicone in a small area first, though it is body-safe and certified to ISO 3533.

How it compares

Strokers with dual motors and app connectivity offer motorised feedback that adapts to your movement, whereas standard silicone hand strokers rely entirely on your own grip and pace. Male Strokers without motors are lighter, simpler, cheaper, and need no charging, but they deliver passive sensation only—your hands do all the work. The F2S Double Sonic adds active, responsive stimulation that adjusts in real time, making it better suited to men seeking a more interactive, learning experience rather than a basic sleeve.

What you can use it with

Pair this stroker with Cock Ring Sets to intensify erection hardness and sensation during use. A cock ring worn at the base restricts blood flow out of the penis, making your erection firmer and more sensitive to the stroker's dual motors. This combination is especially powerful during stamina training sessions, as the ring helps maintain control and prolongs arousal while the stroker's AI mode learns your rhythm. Together, they create a more immersive, full-body experience.

More from Lelo

Lelo makes premium adult toys across masturbators, couples' vibrators, rings, and prostate toys—all certified to the highest safety standards and designed with app connectivity and realistic features in mind. Explore the full range to find other app-enabled or sonic options that suit your needs.

Read more before you buy

Want expert guidance on choosing the right stroker for your body and preferences? Best Male Masturbators covers the main types, features, and what to expect from each.

Why buy the F2S Double Sonic Waterproof Masturbator by LELO

Keen to get harder and last longer tonight? Buy the F2S Double Sonic Waterproof Masturbator by LELO from The Cock Ring Store—genuine, function-tested, and quality-checked. Every stroker ships discreetly with fast delivery across Australia. Cockringshop packs your order with care and sends it in unmarked packaging so your privacy is protected from letterbox to bedroom. Australia's cock ring specialists, helping you buy with confidence. The Cock Ring Store ships discreetly Australia-wide.