"Product model: CY-T2 Colors: black, white, pink, green, blue (optional) Bluetooth-compatible: Bluetooth-compatible V5.3, high-definition binaural call Product horn: 8mm composite film horn Product chip: Jerry 6983D Standby time: 60 days+ Working time: 5 hours, the charging box can charge the headphones 3 times. Charging time: approximately 45 minutes"