520 Gen2 Earhook Business Bluetooth Headphone, Style: With Charging Case

1. Bluetooth version: V5.1+EDR2. Wireless frequency: 2.4GHZ3. Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.34. Transmission distance: about 10 meters5. Battery capacity: earphone 50mAh, charging case 400mAh6. Charging voltage/current: 5V/1A7. Speaker impedance: 8mm 32Ω8. Microphone sensitivity: -42dB9. Weight: earphone is about 12.5g, charging compartment is about 78g Features:1. 360-degree panoramic sound, TWS true wireless, surround stereo sound2. Large moving coil and loud volume, no fear of noisy environment3. ENC dual microphone noise reduction, clear call4. CVC8.0 intelligent noise reduction core, eliminate call noise, restore high-definition human voice calls5. Double independent adjustment shafts, soft silicone ear hooks, adjustable wearing angle6. Memory pairing, automatic connection back7. Multi-function button operation, simple and convenient