M226 Neck-Hanging In-Ear Pentatone Wired Sports Digital Display Bluetooth Earphone 1. Graphene composite diaphragm with lightweight, high fidelity, optimize the high frequency of the sound, so that the sound more uniform and crisp 2. Hybrid physical noise reduction technology with professional acoustic architecture, effective vibration noise management 3. Low power consumption bluetooth 5.4 chip, simple and fast connection, signal stability 4. LED digital display, keep track of the power level 5. Human ear engineering, 45 degrees tilt into the ear, fit high and stable not to fall off 6. Large dynamic speakers, high school and low frequency, balanced restoration of the sound level feeling 7. Simple four keys to complete the daily needs of various operations Parameters: 1. Chip: JL AC7006F4 2. Battery: 500mAh 3. Speaker: 10mm copper ring 4. Bluetooth version: 5.4 version 5. Bluetooth distance: 10 meters 6. Charging time: about 3 hours 7. Talking time: about 50 hours 8. Listening time: about 50 hours 9. Charging cable: Type-C charging cable 10. Accessories: with two pairs of ear caps, manual, charging cable 11. Weight: about 49g