Features:- 2 output with 16 modes.- 20 level intensity.- 20 minutes default timer, can adjustable from 10~60 minutes.- Rechargeable lithium battery.- Battery indicator to konw when need to recharge battery.Specifications:-Input Voltage: 110-240V AC 50/60Hz-Output Voltage: 5V 500mA-DIsplay: LCD screen display-Device Size: 50x93x10mm-Package Size: 144x79x69mmPackage Included:1 x Device2 x Large Pads2 x Small Pads2 x Electric Wires1 x USB Cable1 x AC Adapter1 x Collection Board for Pads and Wires1 x Instruction Manual1 x Acupuncture Point ChartNotes:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight deviation for the measurement data.3. We will send you a plug adapter according to your living country, not the Voltage Transformer.