LELO F1s Prototype - Black1 / 5

LELO F1s Prototype - Black

LELO
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Curated by Alexander Institute since 1997.
Discreet packaging
Data never sold
AASECT-reviewed

The story

The LELO F1S Prototype is an early-generation version of LELO's SenSonic masturbator — the dual-motor design combining conventional vibration with SenSonic technology, in the original Prototype form factor with a viewing window for visual feedback during use.

The Prototype edition was LELO's first public release of the F1S concept, making it a collector's-edition piece for those who want the original design alongside its historical context. SenSonic technology, body-safe silicone sleeve, USB rechargeable. Black is appropriately understated.

Good for: the original F1S SenSonic masturbator experience in the Prototype form factor, combining dual-motor stimulation with a viewing window design.

OUR EDITORIAL STANDARD

Body-safe materials. Brands we trust.

Complete the experience.

Questions before you buy?

Will this arrive in discreet packaging?
Yes — all orders ship in plain, unmarked boxes with no product names and no brand logos on the outside. We ship discreetly on every order, automatically.
What's your return policy?
Sex toys can't be returned once opened — that's an industry-standard hygiene rule, not specific to us. For defective or damaged items: we'll replace or refund. Email us and we'll handle it.
Is this product body-safe?
We carry only products that meet our editorial standard: body-safe materials, no phthalates, no BPA, no latex in products marketed for internal use. Our board sets the bar; this product meets it.
How do I clean it?
For non-motorized toys: warm water and mild soap, or a dedicated toy cleaner. For motorized or electronic toys: wipe with a damp cloth and toy cleaner — don't submerge unless the product is rated waterproof. Waterproof rating is noted in the specs section when applicable.
Is this rechargeable?
Check the specs section on this page for charging details. Most modern vibrators and massagers include a USB-C or magnetic charger. Battery-powered products are noted clearly in the Materials & specs accordion above.
Can I order anonymously?
Yes — guest checkout is available, no account required. We ship in plain packages with no external branding. The charge on your card statement appears as "Alexander Institute" — the parent company that owns Loving Sex, nothing that identifies the product type.