T50 Bluetooth 5.3 Wireless Headphone Single Ear Digital Display Stereo Earbuds 1. Non-in-ear design, bone conduction open audio, freeing the ear canal for long-term wearing without pain 2. Built-in rotatable shaft, easy to rotate 180 degrees, can be worn on left and right ears 3. Combination of composite diaphragm + large moving coil acoustic technology, restores the bright high frequency of music, and the fixed frequency is thick and elastic 4. The intelligent digital display is clear at a glance, and the remaining power can be checked in real time 5. TYPE-C interface fast charging, 300 mAh battery can be used for 30 hours at a time, talk for 48 hours, and it only takes one hour to fully charge 6. Ergonomic design, fits with the ear to form a triangular stable support, no matter how you exercise, it will not fall off 7. High-definition voice calls, intelligent voice control to free your hands 8. Double noise reduction system to filter external environmental noise and reduce interference during calls 9. Bluetooth 5.3, the connection is stable and uninterrupted, playing games, listening to the sound and distinguishing positions, high-definition video with lower latency, audio and video synchronization 10. The rigorous design of multiple processes prevents sweat from damaging components, allowing you to exercise without fear Parameter: 1. Bluetooth version: 5.3 2. Transmission distance: 10-20m 3. Battery capacity: 300mAh 4. Charging time: about 1.5 hours 5. Use time: 30 hours 6. Charging input: 5V-150mA 7. Standby time: 365 days 8. Headphone weight: 15g