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Functional characteristics 1.Bluetooth communication technology the use distance of 10 meters. 2.high performance low power point optical navigation processing chip for notebook computer design(built-in Bluetooth adapter) 3.completely based on Bluetooth communication protocol and Bluetooth HID profilov1.0,and fully support AFH frequency hopping technology,strong anti-interference ability. 4.can remember 2sets of Host Bluetooth address,built-in memory to replace the battery,no need to re code. 5.low voltage alarm function. 6.intelligent sleep management technology,100mAh battery standby time up to 6 months.