Specification:Material: ABSPacking: White boxSize: length 96 width 33 height 55mm/3.78*1.3*2.17inInstruction:1. This product uses a rechargeable lithium battery. When used for the first time, it will be fully charged before use. The USB cable can be connected to the charging port for charging. When the product is fully charged, the red light is on and the green light is on.2. When the switch is pressed, the ultrasonic starts to work, and the indicator light is on at the same time. When the product effect is not ideal, the sound wave can be adjusted appropriately to achieve a more ideal driving effect.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-3mm measuring deviation due to manual measurement.Package included:1 X Ultrasonic Bark Stopper1 x USB Cable