MAIN OVERVIEW FEATURES: Device Supported: Base Station,Bluetooth HeadsetInput Voltage: 110 V AC,220 V ACOutput Voltage: 9 V DCMaximum Output Current: 500 mACompatibility: Plantronics Voyager 500A Base stationPlantronics Wireless Headset Systems:CS55CS70CS55HCS70NVoyager 855Voyager 815Voyager 510SVoyager 510-USBSupraPlusLimited Warranty: 1 Year