UpBright New (5.5mm Tip) AC / DC Adapter 6VDC 1A Fits 0.8A 850mA 750mA 600mA 500mA 400mA 300mA 250mA 200mA 100mA with OD: 5.5mm x ID: 2.5mm / 2.1mm Barrel Round Plug Tip and Positive Inside.) 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.