Place of Origin :  Guangdong, China
Model Number :  YH21
Communication :  Wireless
Style :  Headphone
Function :  true wireless stereo, Over-Ear Headphones
Use :  Mobile Phone, COMPUTER, Travel, Portable Media Player, Gaming, Sports, Dj
Active Noise-Cancellation :  NO, NO
Waterproof Standard :  IPX-4
Vocalism Principle :  Dynamic
Volume Control :  Yes
Codecs :  AAC
Private Mold :  Private Mold
Game atmosphere light :  single color
Wireless delay time :  51-60 ms
Battery Indicator :  LED
Chipset Model :  AC693X
Chipset :  JL
Brand Name :  USAMS
Bluetooth Standard :  Bluetooth5.3
Product name :  Headphones
Frequency range :  20Hz~20KHz
Connection range :  ≤10m
Playing time :  70 hours
Charging Time :  About 3 hours
Calling Time :  about 60 hours
Weight :  About 223g
Speaker Sensitivity :  108dB±3
Battery Capacity :  500mAh