Bluetooth Version: BluetoothV5.1/V5.0/V4.0+EDR V2.1/2.0/3.0
Interface: USB 2.0
Frequency Range: 2.400-2.480GHz
Transfer Rate: 3Mbps
Distance: 0-20M
OS Supported: Windows 7/ 8/ 10/11 etc.Not support Mac OS,Linux system
Item Size: 21x16x5 mm
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