UpBright NEW Global DC 3V AC / DC Adapter For Automatic Rotation Leather Watch Winder Storage Display Case Box 3VDC - 3.3V Class 2 Transformer Power Supply Cord Cable PS Charger Mains PSU World Wide Input Voltage 100-240VAC 50/60Hz OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) Tested Units. In Great Working Condition. UpBright 30 days money back guarantee. 1 full year service warranty.