This is the latest fitness tracker with SIM slot and Cellular featuring large OLED touch display, heart rate monitor, steps and calorie counter with waterproofing up to 50 metres. The updated smart module is jam-packed full of new features including a larger display, up to 20 days battery life, vibrating alert system, sleep-cycle analyser, call reminder, time display, weather info and much more. The world's most used exercise companion just got even better!