Type: Bone Conduction Compatible profiles: Bluetooth 5.1 (A2DP, AVRCP, HSP, HFP) Chipset: QCC3024 Frequency response: 20Hz~20KHz Sensitivity: 96 ± 3dB Microphone sensitivity: -40dB ± 3dB Wireless range: 10m Battery type: Li-Polymer Battery 135mAh Battery life: 6 hours of music and calls and standby time up to 10 Days,Charge time: 2 Hours) Water-Res..

Type: Bone Conduction Compatible profiles: Bluetooth 5.1 (A2DP, AVRCP, HSP, HFP) Frequency response: 20Hz~20KHz Sensitivity: 105 ± 3dB Microphone sensitivity: -38dB ± 3dB Wireless range: 10m Battery type: Li-Polymer Battery 145mAh Battery life: 10 Hours (10 hours of music and calls and standby time up to 10 Days, Charge time: 1 Hours) Water-Resista..

Design: Bone Conduction Compatible profiles: Bluetooth 5.1 (A2DP, AVRCP, HSP, HFP) Frequency response: 20Hz~20KHz Sensitivity: 105 ± 3dB Microphone sensitivity: -38dB ± 3dB Wireless range: 10m Battery type: Li-Polymer Battery 145mAh Battery life: 8 hours of music and calls and standby time up to 10 Days, Charge time: 1.5 Hours) Water-Resistant：IP67..