Style: In-Ear Communication: Wireless Connectors: Bluetooth Use: All Bluetooth Devices Function: Microphone, Waterproof, Noise Cancelling, Bluetooth Bluetooth Version: V4.2 Airoha Supported Profile: HFP, HSP, AVRCP and A2DP, AAC Battery: 50 mAh * 2 Backup Battery: 2100 MAH Degree Of Distortion: Show More