BT-1 Wireless Bluetooth In-ear Headphone Sports Headset with Microphones, for Smartphone, Built-in Bluetooth Wireless Transmission, Transmission Distance: within 10m(Black) Main-DJI & GoPro Accessories Fully compatible with SD card

Fully compatible with SD card

General Compatible with Blackview:  BV8800

The skin texture is soft and delicate

It is very convenient and quick to switch through the button switch on the device or external button controller

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BT-1 Wireless Bluetooth In-ear Headphone Sports Headset with Microphones, for Smartphone, Built-in Bluetooth Wireless Transmission, Transmission Distance: within 10m(Black) Main-DJI & GoPro Accessories Fully compatible with SD card1. Headphone design, ergonomic structure, comfortable to wear. 2. Light and durable, easy to carry, close to your ear type, suitable for professional running or other strong sports, even not easy to fall. 3. Earphone connection, using the most advanced memory wire, linear automatic admission, not easy to be deformed. 4. Low power consumption, long standby and play. 5. Bluetooth wireless transmission, more freedom, more comfortable. 6. Using advanced