Half In-Ear Bluetooth Earphones Wireless Sports On-Ear Earphone(Black)

1. Bluetooth program: BlueTrum AB5656C2 2. Bluetooth version: Bluetooth 5.3 3. Wireless frequency: 2.4GHZ 4. Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 5. Transmission distance: about 10 meters 6. Battery capacity: earphone: 60mAh; charging compartment: 400mAh 7. Charging voltage/current: 5V/1A 8. Playback/talking time: about 6h 9. Charging time: about 2h 10. Standby time: 90 days 11. Speaker impedance: 10mm 32ohm 5mW 12. Microphone sensitivity: approx. 3dB 13. Operating temperature: -10 - 50 degrees Celsius14. Weight: about 66.8g Features:1. Golden triangle support force, double stability, precise fit to the ear contour, lightweight2. The ear hooks are made of skin-friendly silicone, lightweight and non-slip3. 14mm large dynamic unit, high-definition resolution audio4. DT4.0 directional sound transmission, private upgrade refuses to leak sound5. Bluetooth 5.3, low power consumption chip, low latency game, stable performance6. HiFi surging sound, non-destructive sound quality7. Intelligent buttons, easy to operate