The Amazfit T-Rex is a military standard and certified smartwatch. With a rugged exterior and tough body, the T-Rex is the ultimate adventurer’s watch, capable of withstanding extreme cold, heat, and monsoonal wet conditions. If you ever find yourself lost, the T-Rex’s optimised GPS will quickly and accurately locate you, and direct you to wherever it is you’re heading - let the adventurer inside you dictate that! And don’t worry, if you’ve been out in the wilderness for a while, the Amazfit T-Rex will outlast you with its’ incredible 20 day average battery life. The Amazfit T-Rex is ready for anything you throw at it, the only question remaining: are you ready to conquer the world? 24/7 Heart Rate Monitoring Equipped with the BioTracker PPG Bio-Tracking Optical Sensor, the Amazfit T-Rex accurately monitors and assesses your heart rate continuously. 20 Day Ultra-Long Battery Life Typical usage results in an expected battery life of 20days, although, by switching to survival mode, you can expect a battery life up to 66 days longs! If you're ever stuck in the wildnerness, the T-Rex will help get you home. 14 Exercise Modes The T-Rex is able to monitor and analyse 14 professional exercise modes, including running, cycling and triathlons. Military Spec Toughness The T-Rex has been certified 12 times as Military standard, so you'll know it stands the test of time. 50m Waterproof The Amazfit T-Rex is rough, rugged, and ready for a dive. Rated to withstand up to 5 ATM of pressure (equivalent to 50m deep), the T-Rex will go with you everywhere. Precise GPS Tracking Using the latest Sony GPS chip and dual-satellite positioning systems (GPS & GLONASS), the T-Rex is able to find a satellite faster and position itself more accurately, meeting your positioning needs wherever you may be - whether it's the concrete jungle, or the outback.