Gadget denma with digital indicator to control vibration power and pattern individually! The heavy vibration and silicone rubber head with flexible neck + matte coated finish provide unparalleled quality, and the state-of-the-art indicator display allows you to control the vibration to your preference. The built-in lithium-ion battery can be used for up to 120 minutes on a 60-minute charge. （Includes a magnetic USB charging cable. Waterproof for hygienic washing and quiet design that does not interfere with play. The ease of use, comfort of application, and operability all add up to a state-of-the-art, high-performance electric hammer. USB charging cable included.