| Bluetooth spec: | Bluetooth V5.3 |
| Operating distance: | 10m |
| Battery: | Polymer Li-ion Battery, 400mAh |
| Working time: | 20hours |
| Charging time: | 4hours |
| Noise canceling sensitivity: | 20dB |
| Noise canceling frequency: | 50-1000Hz |
| Driver: | 40mm |
| Impedance: | 32 ohms |
| Frequency range: | 20Hz ~20,000Hz |
| Headphone sensitivity: | 105dB |
| Charging port: | USB-C |
| Accessories: | Charging cable, Audio cable, Manual |
Contact：Roy Mao
Tel：13794494366
QQ：13188679
Skype：roy_mao2003
E-mail：roy.mao@szunison.cn
Factory address: Building No.3, Hongxinbao Industrial Park, Qiaolong Village, Tangxia Town, Dongguan City, China
