7 Days Warranty (If there are any Manufacturing Defects) Bluetooth: V 5.3, BT8922F2 Battery: 500mah (Charging Case), 40mAh earbuds Working frequency: 20Hz-20KHz Charging time: 2 hours Working time: 4- 5 hours Standby time: 200 hours Type C charging port (support quick charging) Size: charging case：65mm*27mm*50.3mm Earbuds：34mm*22mm*24mm
