Hanging Ear External Sound Single Ear Stereo Bluetooth Earphone 1. Bluetooth version: V5.2 2. Call distance: barrier-free about 10-15m 3. Battery capacity: 110mAh 4. Charging port: Type-CUSB-C 5. Charging time: about 1H 6. Use time: about 8H 7. Standby time: about 15 days 8. Material: ABS, TPU 9. Waterproof performance: IPX5 10. Chip: Jelly BT6973D4 11. Weight: about 28g 12. Size: about 34 x 19 x 12.5mm Features: 1. TPU soft earhooks, non-sensory wear, long wear without pain 2. Multi-point support, lightweight fit, to avoid hearing damage 3. 360-degree stereo sound, bone conduction technology, to prevent the headset leakage, protect privacy 4. 16mm sound unit, composite bio-diaphragm moving coil 5. Automatically adjust the low-frequency and high-frequency energy at any volume to enhance the sound quality. 6. Dual microphone directional radio, noisy environment can also be clear calls 7. Bluetooth 5.2 chip, stable signal, no lag, multi-device compatibility 8. Intelligent touch control, easy to operate