Our new and improved sleep tracking technology allows you to monitor your sleep patterns effectively, enabling you to plan your bedtime, detect snoring, and understand your overall sleep quality. With body composition analysis (BIA measurement), you can keep track of crucial metrics such as body fat percentage and skeletal muscle weight, providing all the feedback needed to monitor your progress. The optical heart rate sensor helps you monitor your heart rate and track your cardiovascular health. Fitness tracking is effortless as your watch automatically detects physical activity, counting steps, calories, and supporting over 90 exercise routines. The watch features a Sapphire crystal display, renowned for its water resistance and a front display that is 1.6 times stronger against scratches. This unisex model (SM-R915FZAANU) weighs just 34 grams and is powered by a 410 mAh battery, designed for adults. It features a buckle closure and comes with a limited warranty.