Designed for your outdoor lifestyle. Powerful built-in navigation system will keep you connected in remote areas and high altitudes, as a MIL-STD-810G certification and a waterproof rating of 5 ATM means your watch can withstand extreme temperatures and conditions. Packed with sensors, smart fitness modes, and even a non-slip button design, your watch will track your progress while remaining connected, easy to operate, and intact. US Military Standard 810G Proactive sports modes Global navigation satellite system (GNSS) 24hr heart-rate monitor* Waterproof 5 ATM Your self-activating fitness assistant. TicWatch S2 is powered by TicMotion, Mobvoi’s suite of AI algorithms to proactively detect your motion, track your swim activities, and provide your fitness records, all click-free. Proactive running tracking Swim monitoring and swim style detection Sleep tracking* *Will be available through upcoming software OTA updates. Wear OS by Google Get proactive help throughout your day with Google Assistant. Get quick access to the information you need and see your latest updates at a glance with the new design and notifications stream. The latest update also provides up to 10 extra hours of battery through a “Battery Saver” mode and improved heart rate tracking accuracy. Up to 2 days of battery life* Power through your days without worry. With up to two days of battery life, you can stay connected on all your outdoor adventures. *Results may vary depending on usage. Durable and comfortable TicWatch S2 is built to last with premium durable quality, making it your reliable outdoor companion. Limitless customization Easily swap out watch straps (additional straps will be available soon) to customize your smartwatch and choose from hundreds of watch faces. Customize to your heart's content.