ApplicationsTrack your way to real results - Automatically detects up to six exercises, while tracking up to 39 more, right from your wrist, Resolve to rest better - Helps you analyze your sleep patterns and encourages you to wind down to keep you refreshed and at your best, Let your body be your guide - Sends you real-time alerts if ever detecting an irregular beat, so you can be more proactive about your heart health, Expand your Galaxy - Sync with your phone to stream your playlist, get notifications and more, right on your wrist, Thin. Light. Durable - A thin, lightweight and durable swim-ready design comes in a variety of colors and interchangeable bands, Lasts for days - Go non-stop with a long-lasting battery that lasts for days on a single charge