Turbo charged massager with ultra-thick 5.5"/14 cm shaft circumference. Ripple G shaft with extremely pliable design hugs every curve. 10 escalating speeds of vibration. Liquid Silicone: softer, smoother, durable and waterproof. State-of-the-art memory chip resumes on last function used. Security travel lock feature - hold for 3 seconds to turn on or off. USB rechargeable - charging cord included. Complete charge in 2 hours. Runs for 60 minutes on high speed and 100 minutes on low speed.