New Design: 3D Roller is so wonderful with unique 3D V type design to fit the whole body curve. T shape is designed for 6000 vib. per/min and is good for skin.Note: Requires one AA battery (not included ), electric power driven. Besides, manual control twist On/Off. Important Note: Some brands rechargeable AA battery is oversize, if you could not put battery into the device. Please change other brand AA battery.Face Massager Kit: It is magical with two shapes of face massager, includes 3D roller massager and T shape electric face roller.Benefits: Daily use of the face roller massager set will make your face and skin look younger. Also, it can combine with skin care products.Waterproof: You can enjoy them while showering due to the special waterproof design. Moreover, the T shape and 3D roller massager allows you to use the product on any part of your body from the angle that you prefer. Whats more, you can use the electric massager whenever and wherever because of its portable design and the included delicate storage bag.