Accurate GPS Positioning: This bicycle computer supports all four major satellite navigation systems for fast GPS signal acquisition and increased accuracy. It displays essential ride data such as time, distance, total time, total mileage, clock, and current altitude, so you can keep track of your ride every step of the way Long Battery Life: Equipped with a 600mAh large-capacity battery, this bicycle speedometer offers over 20 hours of continuous use. It automatically enters sleep mode after 10 minutes of inactivity, ensuring longer battery life. When you power it on, it shows your last recorded ride data