Lelo F1S V2X Blue stroker is the next generation of the ultimate pleasure toy, a penis sleeve created for the thrill seekers who want to explore optimal satisfaction. F1S V2 has double the strength, four uniquely designed program variations, and a softer, more flexible sleeve for a wide range of shapes and sizes. The toy has ten highly sensitive sensors allowing for performance feedback through the LELO app, allowing you to build the most pleasurable set of programs for your ultimate orgasm. Material: Body safe silicone, ABS, Aluminum alloy. Color: Matte Black, Blue. Size 5.6 inches by 2.8 inches. Insertable length 4.3 inches. Internal girth at rest: 5.07 inches. Internal girth maximum 5.9 inches. Weight only product 0.62 pound. Battery: Li-ion 850 mA 3.7 V. Charging 2 hrs at 5.0 V 700 mA. User time 2 hours. Standby time 90 days. Frequency suction motor: 60 Hz. Frequency vibration motor 90 Hz. Interface 3 button. Box contains F1S V2, USB Charging Cord. Warranty registration card. Detailed instruction manual. How to use photo 1: apply a generous amount of LELO Personal Moisturizer to F1S V2 internal sleeve. The more, the better. Step 2: switch on and slowly insert yourself. F1S V2 will begin working when it senses you are inside. Step 3: play with the power settings until you find a vibration that brings a longer and more powerful climax.