All the freedom of a battery toy, without sacrificing power! ABBY G, from our BATTERY+ line, has the strongest battery-operated motor on the market. It's also wildly convenient, taking both regular and rechargeable batteries, with the ability to charge rechargeable batteries inside the toy, thanks to smart charging technology and an optional upgrade with the HYBRID KIT. Basically, we've invented completely new technology so that you get all of the advantages of both battery and rechargeable toys in one vibrator. Smart charging technology distinguishes between regular and rechargeable batteries. Waterproof - submersible. Deep, rumbling motor vibration. Lock function for easy travel. About 1 hour continuous play on highest setting. Designed and handcrafted in Germany. 2 year warranty.