awei A881BL Neckband IPX4 Waterproof NFC Bluetooth Wireless Sport Earphones(Black)

Feature:1. Sweat and splash proof can let you enjoy outdoors activities. 2. Support NFC connection, and enjoy an impressively power sound be free bluetooth play.3. CVC intelligent noise reduction to provide high quality music. 4. Music play time or call time about 8hours, enhance greatly the time of use. 5. High capacity battery for up to 8 hours of continuous playing time on a full charge.6. With multi-point force-supported features, ergonomically designed fit comfortably more stable, sports without fear of falling, long time wearing no pain. 7. Smart one for two simultaneous connection of two mobile phones.Parameters:1. Bluetooth version: V4.22. Battery capacity: 130mAh3. Driver unit: 10mm4. Charging time: 2 hours5. Talk time: 12 hours6. Music time: 8 hours7. Support protocols: HSP/HFP/A2DP/AVRCP8. Input charging standard: DC 5V9. Bluetooth operating frequency: 2.400GH-z-2.480GH-z10. Optimal talk distance: less than 1M11. Maximum transmission distance: 10M