Display: Backlit OLED and touchscreen. Sleep Stages & Score: Inspire 2 tracks your time in light, deep and REM sleep stages and gives you a nightly Sleep Score in the Fitbit app, so you can better understand your sleep quality and work toward better rest. All-Day Activity: Every part of your day impacts your goals, so Fitbit Inspire 2 tracks all-day steps, distance and calories burned. 24/7 Heart Rate: Use 24/7 heart rate to better track calorie burn, optimise workouts and uncover personalised health trends that inspire you to make moves on your health and fitness goals. Active Zone Minutes: This feature alerts you to which heart rate zone you’re in so you can see if you’re working hard enough to reach your goals. Free Fitbit Premium Trial: Your Inspire 2 tracker unlocks a free 1-year Fitbit Premium trial complete with step-by-step fitness & nutrition programmes, personalised insights & motivation, sleep tools and more.Free 1-year Fitbit Premium trial gives you personalised guidance, insights and motivation to help you reach your goals.*. Compatibility: Compatible with iOS 12.2 or higher & Android OS 7.0 or higher. Battery Life: Up to 10 days.