Stereo Earphones Music Headset Wireless Bluetooth Headphones with Mic

Product parameters:
Bluetooth Version :V5.0
Frequency :2.40GHz-2.48GHz
Power ≤ 4 dBm, class 2
Effective range :10M
talking speed 3M bps (asynchronous)
433.0 Kbps (synchronous)
Frequency response: 20 Hz - 20 KHz
S/N rate 70 dB
Distortion: 0.10%
Speaker size :50mm
support A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5
Voltage 5VDC (built-in 500MAH rechargeable battery)
talking time :8 hour
standby time :200hour
charge time: 3 hour
Bluetooth headset Weight: 350g
turn off current :2 ~ 10 µA
operate temperature :-4 ~ +131°F(-20 ~ +55°C)

Packing:
Bluetooth headset*1
USB charging cable*1
Audio cable*1