◆Rechargeable Lithuim battery1200mA; ◆Input Voltage:DC 5V ◆1xUSB rechargeable cable,1x remote controller ◆2 hours time for chargeablle fully, using 1 hour. ◆Advantages: compact, and comfortable to massage. ◆EMS Stimulation to contract your muscle firmly and effectively. ◆Time Default:Auto power off after 15 mins