Military-Standard qualityfeatures 1.7-inch second generation G+F.As the TFT twin glass cover, it's strong enough to deal with a range of screen-destroying behaviors.The TC4 titanium unibody and the exclusive developed two-color silicone rubber is the world's first two-color integration in a smart watch;military-grade materials and fully enclosed design makes it the toughest and sturdiest watch.Successfully passed 12 Military Tests Including, extreme temperature,dust resistance, salt spray, fluid pollution,etc.Certified to MIL-STD810H , Our smart watches for men ensures that you use them confidently in a variety of harsh conditions.60+ Days super battery life M2 is equipped with a 100% pure cobalt battery (military grade), the battery capacity is as high as 380mAh ensuring optimal performance and longevity which is twice as much as that of conventional smart watches.At the same time, super power-saving AI algorithm breaking the industry is adopted to minimize power consumption, enough to last up to 2 weeks under normal use, and can continue to use sports mode, health index measurement and other functions for up to 60+ days in power-saving mode.With 30-minute charge, you can have enough battery backup to last for up to 3 days.Waterproof /Extremely resistant to damage Incredibly strong and corrosion-resistant titanium case has been used to enclose and giving cover, the rugged military grade smart watch with fully enclosed ultra-thin case design can be easily submerged into 50M (5ATM waterproof) deep water.Our durable smartwatch has withstood the extreme conditions and passed drilling, crushing and hot steam washout tests, making our sports watch suitable to use under high temperature and pressure.24H Health monitoring /24 Exercise modesAMAZTIM M2 collects the health data with its advanced real-time monitoring function.The fitness watch helps you monitor All-day sleep, 24-hour heart rate, and real-time blood pressure and blood oxygen.The fitness tracking watch includes a pedometer to keep track of the calories burned throughout the day.Supports up to 24 sports modes including indoor and outdoor exercises such as hiking, skiing, swimming, etc.The smartwatches collects the data with pinpoint precision and accuracy, ensuring that every workout is counted.