BT-1 Wireless Bluetooth In-ear Headphone Sports Headset with Microphones, for Smartphone, Built-in Bluetooth Wireless Transmission, Transmission Distance: within 10m(Blue) Filter-For Dell Cable length: 13

Cable length: 13

Weight:55g

Wireless Frequency: 433MHz

smooth opening and closing of the cover

BT-1 Wireless Bluetooth In-ear Headphone Sports Headset with Microphones, for Smartphone, Built-in Bluetooth Wireless Transmission, Transmission Distance: within 10m(Blue) Filter-For Dell Cable length: 131. 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