The Amazfit T-Rex 3 has passed the toughest military standards, allowing robust construction to be made along with the other features including a decent 1.5 inch AMOLED touch screen that is extremely bright. It also has complete mapping and subsequent navigation, 170 sport profiles and modes, and it has scuba certification so you can take it driving under water. The device has a built-in mic for voice command, features up to 3 weeks of battery life, and costs $299.