HEADSET SD FM WIRELESS MICROPHONE - BLUE

WIRELESS HEADPHONES P57
FUNCTIONAL BLUETOOTH HEADPHONES
Specification:
Power supply: DC 5V / DC 3.7V (battery)
Power: 35 mW
Signal to noise ratio SNR: 88 Db
Frequency: 50Hz-20KHz
Bluetooth: Bluetooth 4.2 + EDR (Enhanced Data Rate)
Connectivity: 2.401-2.480 GHz
Impedance: 320HM
Range: 10 m
Built-in microphone: yes
Built-in SD card reader: yes (no card included)
Radio function: yes
Charging time: 2 hours
Working time: up to 8 hours (talk time up to 6 hours)
Standby time: 18 hours