1. Bluetooth version: 5.3 2. Waterproof level: IPX4 3. Bluetooth protocol: HSP, HFP, A2DP, AVRCP 4. Noise reduction method: ANC active noise reduction 5. Noise reduction depth: -25dB 6. Headphone battery capacity: 40mAhx2 7. Charging compartment battery capacity: 380mAh 8. Audio decoding format support: SBC/AAC 9. Battery life: about 6 hours at a time (50% volume) 10. Small size, equipped with ANC active noise reduction function 11. Built-in Bluetooth chip 5.3, no delay during phone calls and games 12. Ergonomic design, stable and comfortable
