@GB - 2.9inch super big ANST screen - ANT+ Peripheral supported: heart rate monitor, cadence sensor, powermeter - Real time data showing:max/current/average speed, cadence, heart rate, power,gradient; Time, distance, ascent, ODO, altitude, temperature - Support app data analysis and sync to Strava - 1100mAh rechargeable battery, 30+ hours super long endurance - With 16M Internal memory, CYCPLUS M1 save about 150 hours cycling data - It supports BLE5.0, and can quickly synchronize data to mobile phone -Sync time for reference: about 10.35kb/s or 45s for 100km (IOS); about 8.37kb/s or 56s for 100km (Android)..This test includes cadence, speed and heart rate sensor data. - It supports automatic power-off and automatic pause. Notice: Please note the mount holder Z1 is for 31.8mm handlebar. Installation method: 1. Cross-fix the holder with rubber bands 2.Cycplus z1 bike computer mount (purchased separately)