Lelo F1S V3 Red Male Stroker. Embedded inside F1S V3, a performance feedback sensor emits real time encrypted information via Bluetooth based on the device's movement. Then, the AI Interactive mode in the Lelo app processes the data in real time, syncing the motor intensity and motion response perfectly with the device's movement. This is possible thanks to meticulous in-house testing during the development stage, where we trained the AI interface using the encrypted tester data to refine its motor response capabilities. Product features: auto adjusted Liquid Silicone. The newly introduced Silicone ribs allow for airflow, eliminating the creation of air pockets while providing an added point of stimulation. This real feel material embodies softness, elasticity, and durability. App connected with 7 powerful pleasure settings. Special features. Both versions have 4 settings, and with Lelo App, users can unlock 4 additional settings via Bluetooth, including the new powerful AI interactive mode. New XL size for larger anatomies. Based on customer feedback, we are launching two sizes: one normal size and one XL size. Sensonic and Cruise control technology. The sensation of sonic waves and patented Cruise Control technology that assures no drop in intensity make F1S V3 the ultimate act of self love. Unique Dual Motor Design. Two synchronized motors stimulate the penile nerve endings and shaft, delivering the sensation with no hand motion needed. Warranty: LELO Warranty 1 Year Warranty and 10 Year Quality Guarantee. Materials: Body safe Silicone, Aluminum alloy, LEXAN 141R. Product insertable Length 4.3 inches. Product Length 5.67 inches, Width 2.83 inches. Product weight 0.69 pound. Product Package Length 7.4 inches, Width 4.3 inches, Height 3.1 inches. Package Weight .70 pound. Categories: Male Masturbators, Sex Toys for Men, Sleeves, Rings, Solo Masturbators. 2024.