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Product description：

A01 chip: CST Blue AB5756C
Range: 12m (Bluetooth 5.3)
Operating Frequency: 2.402 ghz ~ 2.480 ghz
Transmit Power: CLASS2, MAX4dbm
Snr: -85 DBV distortion: < 1%
Operating Frequency: 20HZ-20KHZ
Speaker size: 16 * 9 * 2.5 mm speaker impedance: 8 ± 15% ω
Horn Power: 0.8 W short-term maximum power: 1W
Charging input voltage: DC5 + 0.25 V
Battery size: 3.8 V/90 Mah
Operating Voltage: 3.7 V (3.3-4.2 V)
Charging Time: < 2h quiescent current: S5UA
Nipple sensitivity: -42 + 3DB low voltage cue: 3.0V
Continuous music playing time: about 5 hours (80% volume)

Software function:

• HD UV Protective Lens :Protects your eyes from harmful UV rays while driving or outdoors.

• Wireless Bluetooth Headset :Allows you to enjoy your music without the hassle of wires getting in the way.

• Waterproof :Can be used in any weather condition without worrying about damage caused by water.

• Active Noise-Cancellation :Blocks out external noise, allowing you to focus on your music or calls.

• Smart Touch Control: Intuitive touch interface for music/call management.

• Remote Control Photo: The phone's camera is on and you can take a picture by double-clicking on either side