New Active Reduction Head-mounted Bluetooth Headset

Product information:
Color: black, silver
Transmission range: 10 meters
Chip type: Jerry
Battery life: more than 8 hours
Function:-1, call function, voice control, support music
Material: ABS
Purpose: Head-mounted
Rated Power: 20MW
Frequency: 80HZ-20KHz
Call time: 8 hours
Distortion: ≤ 0.5%
Battery capacity: 2*400mAh
Charging voltage: 5V ± 0.5V
Charging time: 3 hours
Music playback time: 8 hours
Standby time: 300 hours
Supports A2DP,AVRCP, and Handsfree profile protocols.
Bluetooth version: V4.1 + EDR Class 2
Working range: 10 m
Bare Metal size: 190mm * 185mm * 41mm
Noise reduction range: 18-20dB 200MHz