Features: 1. Open, no wear, more transparent, comfortable and safe to wear. 2. ENC high-definition call noise reduction, good sound quality. 3. 360-degree panoramic sound effect, directional transmission without leakage. 4. Touch the touch button to connect the headphones automatically after taking them off. 5. Super long battery life, the earphones can play continuously for up to 5 hours, and with a charging compartment, they can play continuously for 35 hours. 6. There is no delay in the game, the transmission is stable, and the sound and pictures are synchronized. 7. Telegraph number prompts and intelligent voice prompts (default English). 8. Applicable to all smart devices. Specification: 1. Version: V5.3 2. Supported protocols: A2DP AVRCP HFP 3. Transmission distance: 10M 4. Transmission frequency: 20HZ-20KHZ 5. Headphone battery capacity: 70mAh 6. Body battery capacity: 400 mAh 7. Talk time: 5 hours 8. Play time: 5 hours 9. Standby time: 100 hours 10. Charging time: 2 hours 11. Charging port: Type-C 12. IPX5 sweatproof Packing list: 1. Bluetooth headset x 1 2. Charging cable x 1 3. Chinese and English manual x 1