1.Rotatable and stretchable design,portable to take 

2.Active noise cancelling,up to 28dB 

3.Metallic headband and earpad(CD texture) 

4.Matte UV coating  

5.3.5mm jack line wired headphone,Bluetooth  

6.Super soft protein earmuff  

7.Ergonomic design, more comfortable to wear

Parameter of earphone

1.Bluetooth chipset:ATS3015；ANC chipset：TI 

2.Bluetooth version:V5.0 

3.Battery:400 mAh rechargeable lithium battery 

4.Charging time:3H 

5.Working time:10-12h(Bluetooth+ANC);  20h(ANC only) ; 20h(Bluetooth only) 

6.Working distance:≥10M 

7.Frequency Response: 20Hz-20KHz 

8.Charging Port: micro usb  

9.Charger adapter output: DC 5V& 1A 

10.Sensitivity: 119±3dB