NOTE:Because different production batches,may be a little difference. please in kind prevail. There are certain errors in the SIZE. IMPORTANT:Cannot be used during charging. please use it after unplug the power after charging is complete.  Product volume: ≤75DBProduct material: Silicone, ABS, TPECharging method: USB magnetic chargingCharging time: Within 4 hoursUse time: 45 minutes or moreProduct weight: About 770g Feature：1. Exciting speed piston, up to 580 times/min, feel like a violent, top position swaying wildly;2. Long-distance piston, long telescopic stroke, mouth to flower center;3. Gentle piston, tender, smooth and crisp;4. Hot piston, fully intelligent heating, experience the temperature of love;5. Quadruple pistons, quadruple upper position experience, stepless speed regulation, true coordination, USB charging; Privacy GuaranteedYour privacy is the utmost importance to us. The default name on the package have not sex word(any other requirements, please send us a message), and with our discreet packaging you can shop in confidence, the only person who knows what's inside the package is you!    Finally, I wish you a happy shopping, best wishes