Product model: M9 Bluetooth solution: Bluetooth V5.2 Product speaker: High quality speaker Product chip: China Blue News Standby time :120 days + Working time: 3-4 hours, the charging compartment can charge the headset 10 times Charging time: about 1 hour Communication distance: accessible 10 meters Electrical bin interface: Type-C charging port Headphone battery capacity: 40mah Headphone battery capacity: 1200 mah (can be used as a charging bank) Body material :ABS Operation mode: touch/button type Color box size: 99*91*35mm Product color: Black - white - pink - blue - purple Product support: headset + charging cable + color box + manual Function operation: Pause/Play: Click Top/Bottom track: Double click (left and right ears up and down) Volume plus/minus: Three hits (one plus one minus left and right ears) Summon SIRI: Press and hold