Bluetooth Earphone With Digital Display Charging Compartment Wireless Earphone For Car Talking Noise Reduction 1. Bluetooth version: Bluetooth 5.1 2. Support Bluetooth: A2DP, AVRCP, HFP, HSP, EDR 3. Transmission distance: about 10m 4. Chip: Jerry 6973 5. Use time: about 13-15 hours 6. Standby time: about 400 hours 7. Charging time: about 1.5 hours 8. Charging port: Type-C 9. Speaker: 10mm 13ohm 10. Battery capacity: earphone: 120mAh; charging compartment: 500mAh 11. Main body material: ABS + PC 12. Frequency range: 2.402GHz-2.480GHz 13. Voice prompt: ChineseEnglish 14. Signal-to-noise ratio: greater than 90dB 15. Sensitivity: -85dB 16. Packing list: earphone x 1, charging compartment x 1, manual x 1, ear cap x 1, charging cable x 1 17. Weight: about 76g Features: 1. Independent cavity, built-in high-fidelity full-range speakers, HIFI sound quality 2. Bluetooth 5.1 chip, transmission distance is farther, smooth game video without lag, stable transmission 3. Dual microphone intelligent noise reduction processing, make the call clearer 4. Multi-process design headset body, IPX7 life-grade waterproof, no fear of rain and sweat invasion and wet 5. Ergonomic in-ear design, close to the ear canal, with soft silicone earplugs, long wear without pain 6. Multi-function button operation, convenient and fast