Wireless version: 5.3 

Music play time:21 hours 

Charging time: 1.5 hours 

Music&ANC time:10 hours 

Sensitivity:115 dB 

Frequency Response:20~20KHz 

Charging voltage: 5V RF 

Receiver Sensitivity: -86dB 

Battery capacity:400mAh

We offer a 90 day warranty on all Tools and Accessories.
Please view our Warranty Policy for complete details.