Lixada Meilan M4 Wireless Bike Computer Waterproof IPX5 BT4.0 Cycling Speedometer Digital Odometer Thermometer for Sport

Large size IML surface screen, abrasion resistant and anti-drop.
Support external heart rate sensor, and support BT4.0 data transmission.
High brightness, uniform white flat back light makes the display more clearly.
Show your cycling data and timely record your training process.
The built-in battery can continuously work 120 hours after fully charge.