B21 Wireless Bluetooth Headset TWS Binaural In-ear 50 Noise Reduction Sports Stereo Headset

Product information:
Color: black, white, pink, light green, sky blue
Transmission range: 15 meters
Chip type: Zhongke Lanxun
Battery life: more than 8 hours
Function: call function, voice control, support music, other
Material: ABS
Usage: earplug
Style: simple style