Bluetooth: MKB V03 Wireless Headset
Version:V5.3
Support Bluetooth protocol ：A2DP/AVRCP/HSP/HFP
Bluetooth operating frequency ：2.402GHz-2.480GHz
Receiving sensitivity （TYP）：-42d±3dB
Bluetooth effective distance ：≤10 meters
Horn power ：Rating 5mW
Channel system ：Stereo sound
Frequency response ：20Hz ~20KHzA
Built in battery：300mAh
Charging input standard ：DC5V/1A
Charging time ：about 1.5 hours Bluetooth V5.3/30 hours music time/ENC/Origianl silica gel
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