LELO F1s Developer’s Kit


High-Performance Sex Tech

Bridge the gap between science and nature with LELO F1s, the next-generation pleasure product for penises that makes you the master of your destiny. And with a window in the casing, you can add a unique visual element and see your pleasure in action.

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Using powerfully intense dual motors, Cruise Control, and LELO’s revolutionary SenSonic technology, Fs massages you with deeply satisfying sonic waves for an entirely new, completely mind-bowing sexual experience. Or better yet, utilize the free Software Developer’s Kit to create your very own sensations and track your progress – and prowess – through the customizable internal sensors!

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How does it work?

Through its unique dual-motor design, the F1s Red combines conventional vibrations with an entirely new sensation never-before experienced in a pens pleasure product: SenSonic technology.

It’s the same high-tech concept that made LELO SONA one of the world’s best-selling sex toys. Instead of standard vibrations, one of the motors emits powerful sonic waves that permeate deep into your penis, making it feel as though it’s resonating pleasurably from all directions all at once, instead of simply tickling the nerve endings on the surface of your skin. It will help you achieve the most overwhelming orgasms of your life.

Combined with the patented Cruise Control setting, which ensures F1s never experiences a frustrating power drop during vigorous use. Instead, it intelligently monitors and controls the intensity to ensure you get a completely seamless, uninterrupted experience.

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Get to know F1S:

  • Simple intensity controls for one-handed use
  • Curved internal grooves for heightened sensations
  • Window panel for new visual dimension
  • Ergonomic, body-safe silicone internal canal
  • 10 Cutting-edge performance sensors
  • Free downloadable content

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Access the Developer’s kit – The exclusive and freely available SDK enables you to experiment with the sophisticated sensors and industry-leading technology, and shape the future of your pleasure.

App-Connected – Connect your device to test drive the LELO demo app – control device settings as well as gain new insight into your performance.

Body-Safe Silicone Sleeve – Ultra-smooth and soft to the touch, F1s Red looks sleek on the outside and feels sexy on the inside.

Powerful Pleasure – The mind-blowing sensation of sonic waves and patented Cruise Control technology make F1s Red the ultimate act of self-love.

Fully Waterproof & Rechargeable – Using the supplied USB charging cable, F1s Red can go wherever you go, and the smooth, waterproof design is easy to keep clean.

2 hours of use in one charge – Long-lasting power to allow you to explore all the sensations, patterns and app capabilities while you work on your stamina.

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  • Materials: Silicone, ABS, Aluminum alloy
  • Body Colors: Matte Black
  • Interface: 3-button
  • Sensors: 10
  • Motors: 2
  • Frequency: 63Hz
  • Battery: Li-Ion 850mA 3.7V
  • Charger Time: 2hr at 5.0V 700mA
  • User Time: 2h
  • Standby Time: 90 days
  • Size: 143mm x Φ 71mm
  • Insertable Length: 110.72 mm
  • Weight (only product): 286.9 g

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In the Box:

  • F1s Red Trainer
  • LELO (Toy) Cleaning Spray
  • Don’t Disturb Sign
  • Gloves
  • Starter Guide
  • USB Charger
  • Satin Storage Pouch
  • Warranty Registration Card
  • Detailed Instruction Manual

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