Built-in high-sensitive GPS chip with accuracy within 5 meters. Supports GPS, GLONASS, and BeiDou for fast global positioning. Automatically sets time zone and provides real-time GPS timing. Real-time ride data tracking: Supports display of 9 key cycling metrics to help riders monitor performance. Ideal for daily leisure riding, the M3 is an entry-level GPS cycle computer designed for everyday use. USB rechargeable with built-in 400mAh lithium battery. Can be charged using any device with a USB DC 5V port. Note that GPS bike computers typically consume power faster than traditional models. IPX5 waterproof rating: Suitable for use in light to moderate rain. Do not submerge in water or use during heavy downpours. Ensure the USB cover is securely tightened during use. 1.7-inch full-screen anti-glare monochrome LCD with white backlight. Displays data clearly in both dark and bright conditions. Compact and lightweight design fits comfortably in the palm of your hand. Easy to carry and install. Suitable for various outdoor activities including cycling, racing, RC cars, motorboats, canoeing, drones, and other fitness sports.