520 Gen2 Earhook Business Bluetooth Headphone, Style: With Charging Case Type-More Tablet PC Cases 40HQ: 3582 cartons * 540

40HQ: 3582 cartons * 540 pcs = 1934280 pcs

Loading Container 20GP: 643 cartons * 400 pcs = 257200 pcs

and feel comfortable

Input interface: USB C

520 Gen2 Earhook Business Bluetooth Headphone, Style: With Charging Case Type-More Tablet PC Cases 40HQ: 3582 cartons * 5401. Bluetooth version: V5. 1+EDR 2. Wireless frequency: 2. 4GHZ 3. Support protocol: A2DP1. 3 HFP1. 6 HSP1. 2 AVRCP1. 6 D11. 3 4. Transmission distance: about 10 meters 5. Battery capacity: earphone 50mAh, charging case 400mAh 6. Charging voltage current: 5V 1A 7. Speaker impedance: 8mm 32 8. Microphone sensitivity: 42dB 9. Weight: earphone is about 12. 5g, charging compartment is about 78g Features: 1. 360 degree panoramic sound, TWS true wireless,