CYCPLUS M2 Cycling Bike Accessories GPS Bicycle Computer Wireless ANT+ Bluetooth Waterproof Speedometer for Garmin Wahoo XOSSM2 Features:It adopts GPS active antenna, which has better signal receiving ability and faster positioning compared with ordinary passive antenna. And GPS cold boot can be completed within 1 minute. - With ublox gps chip, It has higher receiving sensitivity to shorten the positioning time and improve the positioning accuracy;With 2.5 inch screen, It’s easier to see the information on the screen quickly and clearly during the day and night;With 16M Internal memory, M2 can save about 3000km cycling data;It supports Bluetooth 5.0, and can quickly synchronize data to mobile phone;It supports automatic power-off and automatic pause;M2 Specifications:Screen Size: 2.5 inches LCDProduct Size: 69*69*22mm - Weight: 68g - Memory Capacity: 150 hours - Endurance Time: 35 hours - App Synchronization Connection: Bluetooth 4.0Battery Capacity: 1000mAhCharging Mode: Type-CPeripheral Connection: ANT+Support Peripherals: Speed sensor, cadence sensor, heart rate monitor, power meter - M1 Packing List: 1 * Silicone case1 * M2 GPS bike computer1 * Type-C charging cable1 * Instruction manual1 * Bike computer mount1 * Rubber pad3 * Rubber band - The package you choose may include the following products - Z1: Mount holder - C3: Candence speed dual sensor - H1: Heart rate sensor video