Parameter: Product material: ABS, Charging voltage: 5V, Horn impedance: 320, Frequency: 2.4-2.480GHZ, Working Environment: -10-55 °C, Support Agreement: A2DP/HFP/HSP/AVRCP. Battery Capacity: 350mAh, Standby Time: 33h. Button operation is simple and convenient, allowing for easy calling, switching songs, and adjusting volume. The battery level is clear at a glance with an LED LCD digital display. IPX6 Waterproof and widely compatible with Apple and Android devices. Ultra-high capacity provides long-term standby, and TYPE-C Charging allows for 2 hours to fully charge the earphones, providing long-lasting battery life.