The Oscillating Sphere is a wireless and rechargeable vibrating massage ball that offers a deep and comfortable massage experience. Compact in size, it is the perfect tool to roll out your entire body. Bluetooth-enabled to connect to the optional Addaday app, which guides you through therapies and does the thinking for you. Battery life of 2 hours. Silicone exterior for easy cleaning and also allows for increased tissue grab during rolling and the ability to hold position against a wall or surface.