B9 Bluetooth Earphone Metal Matte Wireless Headphones

General Specification   Product number   B9 Upgrade (Caller Alert)   Material   Metal + ABS   Wearing Type   in-ear   Product Size   3.5cm in diameter / 10cm in length   Net Weight (g)   78g Technical Parameters   Touch / button control   Touch control  Noise cancelling  CVC 6.0   Bluetooth Version   V5.0   Caller Alert   Yes   Binaural call   Yes   Siri / voice assistant   Yes   Battery Capacity   40mAh/300mAh   Charging Time (h)   1h   Talking Time (h)   3-4h   Compatible   iOS Android phone, laptop, and other Bluetooth devices Package  Included:  B9 TWS  4* Ear cap  1* USB Charging Cable