The PHTL Hot Edge smartwatch is just one of four models, including the Curve, Basic, and Classic. The Edge is a high-end model and is one of the most expensive. It features remote notifications, gesture controls, social media alerts, activity tracking, and more. You can also take calls on the device thanks to an integrate mic and speaker. All Hot smartwatches are waterproof up to 5 ATM or 50 meters.