The New Nisco Mini Massager Relieve Muscle Pain And Body Ache. Safe, Reliable And Provides Quick Relief. Can Be Used On Full Body As It Is A Full Body Massager. Best Quality Product. Promotes Blood Circulation. Suitable For Home, Office And While Travelling. Easily Carried Product. Now Take Anywhere And Use In Pain. Current: 0.3A Can Be Used With The Laptop Or 3 AAA Batteries. High Performance Vibrator Provide Best Massage Effect. Ergonomic Design, Fits Human Body Well Easy Touch Operation. Ultra-Compact And Light Weight, Convenient For Carrying . Use 3 X AAA Batteries (Not Included). Various Color . Open The Cover(Cap) On The Top According To Arrow Guide, And Place In 3 X AAA Batteries. Replace The Cover, Stick The Massage Head To Your Body Than Press The Top And Enjoy! Instruction :- Please twist the case, put three (AAA) batteries in and then it work The power of batteries will be disconnected USB connection is plugged in, circuits of USB connection and batteries are designed separately and will not work at same time Please enjoy XY3199 massager, and if you do not USB it for a long time, take batteries out, in order to avoid leaking of batteries to damage the product.