Meet Sense 2the smartwatch designed to help you stress less, sleep better & live healthier. Plus, continuous tracking of your heart & activity lets you track your overall wellness. Get on-the-go assistance with Fitbit Wallet & Maps, and dive deep into your health & fitness with the included 6-month Premium membership. All-day body-response tracking: A cEDA sensor helps identify when your body is experiencing signs of stress so you can reflect on your emotions, take action and go on with your day. Stress notifications: Get notified when stress events are detected so you can respond with physical activity, deep breathing and more. Relax breathing sessions: Do simple guided breathing sessions by following prompts on your wrist. Sleep tracking and sleep stages: Automatically tracks how long you sleep each night and time spent in light, deep and REM sleep stages. Resting heart rate: An important indicator of your heart health and fitness. Menstrual health tracking: Log periods, record symptoms, find patterns in your cycle and estimate your ovulation window. Built-in GPS: See pace and distance on your wrist - no phone needed. Exercise modes: Track your favorite exercises like runs, bike rides, weights, yoga and more and get live stats on your wrist. Water-resistant: Water-resistant to 50 m for the pool, shower and more. Safety Data Sheet.