Daily use of the face roller massager set will make your face and skin look younger. Also, it can combine with skin care products. New Design: T shape’s design is good for skin. Waterproof: You can enjoy them while showering due to the special waterproof design. Moreover, the T shape allows you to use the product on any part of your body from the angle that you prefer. What’s more, you can use the electric massager whenever and wherever because of its portable design and the included delicate storage bag. 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.