LS02 is an upgraded version of LS01, it has a larger screen, longer battery life, more stable version of Bluetooth 5.0 and upgraded sports mode from 7 to 12. 12 sport modes It has a variety of sports modes, you can set your goals, record and analyze your data with the watch interface and app, it is simple and easy to understand. All-day heart monitoring High performance, low power optical heart rate sensor on the back of the watch, combined with intelligent heart rate algorithm, accurate and detailed data of heart rate changes. Sleep well at night Sleep monitoring, identify and record your deep sleep, light sleep, and awake state, quantify your sleep quality, let you analyze your sleep states and achieve better sleep. 1.4-inch true color screen 1.4-inch true color touch screen with 320ppi resolution, it fits with 2.5D curved tempered glass, the upgraded display is more delicate, clear, and natural compared to the first generation. Extended Battery Life 20 days of daily usage, 30 days of standby. The capacity of the battery has upgraded to 260mAh. It cooperates with a new circuit, optimizes power consumption and equipped with anti short circuit chip. Bluetooth 5.0 LS02 has upgraded with Bluetooth 5.0, signal strength is improved, paring is smooth and stable. Low energy consumption and extended battery life, such as mobile phone search, information reminder, and incoming calls, everything can be shown on your wrist. IP68 waterproof With IP68 dustproof and waterproof capability, it meets your daily life and sports waterproof requirements whether it is sweat or splashed by raindrops.Haylou Fit AppLS02 cooperates with "Haylou Fit App", not only it can record body movement data in real time and set multiple functions of the watch in the APP.