Model: BT-89 Frequency: 2.4GHz Bluetooth Wireless Range: 10 Meter Battery Capacity of Microphone Speaker: 1400mAh Working Time: 50 hours Input: 5V (500mAh) Temperature: Minus 10 degrees to 45 degrees Compatible with Mobile Radio: for KT-8900D KT-7900D KT-980PLUSKT-780PLUS KT-5800 Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage: AC100-240V Colour:black Material:plastic Package Contents: 1x Wireless Hand Speaker Microphone 1x 8-PIN Bluetooth Wireless Adapter/Dongle 1x USB Cable for Hand Speaker Microphone 1x Belt Clip for Hand Speaker Microphone 1x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.