Noise reduction: 18DB±2 
Time for ANC&bluetooth: 10h
Time only for ANC: 40h

Time only for bluetooth: 15h

Waterproof: IPX 3 daily water proofing 

Battery: 400mah 

Charging time: 1.5-2h

Operating distance: 10m
Working voltage: DC 3.7V
With microphone
Foldable design easy for storage

Very stable connecting phones

Black, white available

Customized voice files available

Compatible with: iPhones, iPads, Samsung, Huawei, Xiaomi, Oppo, Vivo etc.