Uiisii R03 high quality Wireless bluetooth Neckband headphone

Model Number: R-03
Vocalism Principle: Hybrid technology
Volume Control: YesControl Button: No
Style: In-ear
Communication: Wireless
Use: Portable Media Player, Mobile Phone, Aviation, COMPUTER, Dj, Gaming, Sports, Travel, For Internet Bar, HiFi
Headphone
Function: Waterproof, Noise Cancelling, Microphone, Wireless Charging
Waterproof Standard: IPX-5
Active Noise-Cancellation: Yes
Type: In-Ear Headset
Usage: Mp3/cellphone /music
Playing time: 7+ hours
Impedance: 32 Ohm
Sensitivity: 102 +3db

Frequency response: 20-20000Hz