The built-in battery has enough power for up to 56 hours. You can recharge it via the included wireless USB charging pad, or if you own a Galaxy phone with Power Share, you can get power directly from your smartphone. Stress Level Monitoring The Galaxy Watch3 can detect your stress level and provide you with calming breathing guides to help you relax. Work Out at Home The Galaxy Watch3 can be paired with various SAMSUNG smart TVs, where you can work out to over 120 fitness programs and follow onscreen video demonstrations. Simple choose a workout and cast it to your TV. As you go, the Watch3 will track your progress automatically and your TV will display your heart rate in real time. Trip Detection For added peace of mind, the Watch3's Trip Detection feature can detect if you've fallen, notify If you want to break out of the gym or your living room and experience the great outdoors, the Galaxy Watch3 can withstand the elements and keep you on the right path. It achieved the MIL-STD-810G rating for shock, temperature, dust, and high altitude resistance, and is IP68 rated with up to 164' (5 ATM) of water resistance. When outside, built-in GPS tracking records your route and helps you get back from a hike or jog.