Brand Name: CHUJIE 

Style: Neck-mounted 

Vocalism Principle: Orthodynamic 

Origin: CN(Origin) 

Control Button: Yes 

Active Noise-Cancellation: Yes 

Communication: Wireless 

Volume Control: Yes 

Sensitivity: 120±5bBdB 

Wireless Type: Bluetooth 

Is wireless: No 

Line Length: Nonem 

Support APP: Yes 

Function: for Video Game 

Function: For Mobile Phone 

Function: HiFi Headphone 

Function: Sport 

Number Of Drivers: 2 

Plug Type: L Bending 

Package List: User Manual 

Package List: Charging Cable 

Package List: Replaceable Pads Set 

Impedance Range: up to 32 Ω 

Connectors: USB 

Model Number: DD9 

Bluetooth Version: 5.0 

Codecs: AAC 

Support Memory Card: No 

Driver Diameter: 10mm 

Resistance: 32ΩΩ 

Waterproof: Yes 

Frequency Response Range: 20 - 20000Hz 

With Microphone: Yes 

Features: With Microphone 

Charging Method: CABLE 

Magnet Type: OTHER 

Battery capacity: 100mAh 

Music time: about 7 hours 

Function 1: magnetic absorption nano 

Function 2: single battery life 

Function 3: soft round wire 

Function 4: metal heavy bass