BG5 is a glucometer with Bluetooth who works with an app on smartphone. After first pairing, it can auto reconnect without pairing again when later powered on. Then App is auto launched, all the data collected and synced to iHealth Cloud. The app guides user for right operations step by step, shows the glucose trend, management glucose level, recognizes the strip information and alerts the user for right strip type, expiration date, and the number left etc. The size of the BG5 is very slim and well designed for finger hold, easy to take with for continually data collection.