Bluetooth earphone S-530

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Blue tooth Version: V4.0+EDR
Impedance: 32Ω

Sensitivity: -42dB 
Frequency range: 20-20KHz
Transmission Power: Class 2

Transmission Range: 10m

Radio frequency: 2.402-2.480GHz

Color: White, Black, Beige

Music Time: 1-3h

Talk Time: 2-4h

Standby Time: 120 hours

Charging Time: About 2h

Battery Type: 50mA rechargeable polymer battery

Output Power: 30mW

Power System: AC110-220V / DC5V

USB Cable Length: Approx. 5cm

Size: 16*15*28mm
Weight:6g