Accurate GPS Positioning: Dual GPS & BDS modes provide precise worldwide location data for enhanced navigation. Bluetooth APP Connection: Easily configure via OneBiker app, with a 2.3-inch screen displaying essential cycling data. Automatic Backlight: Smart backlight adjusts based on sunrise/sunset, reducing glare and improving visibility. Long Battery Life: Built-in 600mAh battery offers 18+ hours of continuous use; fully charge before first use. IPX7 Waterproof: Protects against rain, but avoid prolonged submersion for maximum longevity.