Product Specification: 1. Model: M10 2. Bluetooth specification: V5.1 3. Bluetooth Profile: A2DP, AVRCP, HFP; HSP 4. Working voltage: 3.1V~4.2V 5. Charging voltage: 5V-1A 6. Charging time of headset: 1 h 13. Charging time of the charging box: 2h 14. Support system: All Bluetooth devices and mobile phones; Products include 1 * One pair of Bluetooth headsets 1 * Charging box 1 * Charging Ear cable 1 * User Manual 4 * cap Product type: Wireless Earphones Details Noise cancelling Passive Headphone type In ear Water resistance yes Playback control Yes Bluetooth version 5.1 Earphone standby time 4 to 5 hours Microphone yes Main details only.