Model: M19 Bluetooth specification: V5.1 Bluetooth Profile: A2DP, AVRCP, HFP; HSP Working voltage:3.1V~4.2V Charging voltage:5V-1A The battery capacity of the headset: 50MAH The battery capacity of the storage box:2000MAH Transmission distance:>10M Specifications:1.100% brand and new Wireless Bluetooth earphone LED digital power display Intelligence touch control without compression (playback/pause, answer/hang up, switch songs, adjust volume,summon voice assistant) Intelligent noise reduction Waterproof and sweatproof, strong endurance




