TWS Fingerprint Touch Bluetooth Headset LED Battery Display With Charging Bin(White) Filter-Light Bulb Camera 300 meters outdoors and 100

300 meters outdoors and 100 meters indoors (depending on actual environmental changes)

especially well used in mining

1x SD Card Slot

If you do not use the battery for a long time

Interface: USB 3

TWS Fingerprint Touch Bluetooth Headset LED Battery Display With Charging Bin(White) Filter-Light Bulb Camera 300 meters outdoors and 1001. Model: HMB 11 2. Bluetooth version: 5. 0 3. Communication distance: about 10 meters 4. Headphone standby time: 120h 5. With charging box weight: 70g 6. Headphone charging time division: 1h 7. Talk time: 3. 5h 8. Music time: 4h 9. Charging voltage: DC5v 10. Charge box battery capacity: 400Mah 11. Support Agreement: HFP HSP A2DP ARCP Specification: Package Weight One Package Weight 0. 13kgs 0. 29lb One Package Size 13cm * 11cm * 6cm 5. 12inch * 4.