Vocalism Principle: Dynamic
Control Button: No
Active Noise-Cancellation: Yes
Communication: wireless
Volume Control: No
Style: Ear Hook
Sensitivity: 120±5dBdB
Wireless Type: bluetooth
Is wireless: Yes
Line Length: Nonem
Support APP: Yes
Function: HiFi Headphone
Function: For Mobile Phone
Function: Sport
Connectors: None
Codecs: SBC
Support Memory Card: No
Resistance: 18ΩΩ
Waterproof: Yes
With Microphone: Yes
battery: earbuds 55mAh,charge case:400mAh polymeric substance lithium battery
bluetooth version: V5.0+EDR
charge time: earbuds charging about 1 hours,charge case about 2 hours
work time: single earbud 5-6 hours,dual earbud 3-4 hours