Features:1. LED power display, allowing you to clearly understand the power status2. Bluetooth 5.0 wireless connection, fast connection speed, low power consumption3. Touch operation, more convenient4. Noise reduction technology produces incredible sound quality and deep bass, and ensures your great experience and fast, stable and effective transmission5. Wear firmly and don't fallProduct Specifications:1. Bluetooth version: Bluetooth V5.02. RF transmit power: level 23. Transmission range: 2.402-2.480GHz4. Communication distance: 10 meters5. Working voltage: 3.0V-4.2V6. Microphone sensitivity: -42dB7. Frequency: 20Hz-20KHz8. Support protocol: A2DP, AVRCP, HFP9. Headphone standby time: about 120 hours10. Music time: 4-5 hours11. Talk time: 4 hours12. The charging box can provide charging times for the headset: 4 times13. Signal to noise ratio: greater than 95dB14. Dimensions: 57.5x48x28mm15. Weight: about 46g16. Battery capacity: headset (50mAh), charging box (500mAh)Packing list:Charging case x 1Headphones x 1Charging cable x 1Specification: Package Weight One Package Weight 0.13kgs / 0.29lb One Package Size 13cm * 11cm * 6cm / 5.12inch * 4.33inch * 2.36inch Qty per Carton 100 Carton Weight 13.50kgs / 29.76lb Carton Size 62cm * 57cm * 28cm / 24.41inch * 22.44inch * 11.02inch Loading Container 20GP: 269 cartons * 100 pcs = 26900 pcs40HQ: 625 cartons * 100 pcs = 62500 pcs