Halo Band includes access to basic features like steps, heart rate, sleep time, and sleep tracking. Halo Band is swimproof; water resistant to 50M.
Membership includes access to full suite of tools, features, workouts, and programs. Free for 6 months. Auto-renews at $3.99/month + tax. To manage your membership, visit Your Account › Memberships & Subscriptions.
Get moving — Intensity-based activity tracking, plus an ever-growing library of workouts from experts like Lifesum and SWEAT. Tools to measure, understand and improve your movement health!

Smartwatches powered with Wear OS by Google work with iPhone and Android Phones. Case size: 44mm; Band size: 22mm; interchangeable with all Fossil 22mm bands
Battery: 24 Hr plus multi day extended mode Varies based on usage and after updates install. USB cable with magnetic charger snaps to rings on watch caseback and spins 360 degrees for ease of use. Charge up to 80% in under an hour
Health and fitness: Heart Rate & Activity Tracking using Google Fit; Built-in GPS for distance tracking; Swimproof design 3ATM; New wellness enhancements allow you to track sleep history, monitor your restfulness and set sleep goals

【TOUGHNESS FROM THE INSIDE OUT】The Amazfit T-Rex Pro comes with a 1.3″ HD AMOLED always-on color screen; The outer bezel undergoes a metal-spraying process, which enhances the rich textures of the light 60g watch body. Having passed 15 military-grade tests1, this smart watch can battle with you through hot deserts, humid rainforest and polar glaciers. Witness endurance that braves the elements with ease.
【YOUR PARTNER IN EXPLORATION】The Amazfit T-Rex Pro smartwatch is high-level exploration partner, supporting four global navigation satellite systems, a blood-oxygen saturation measurement system, a heart rate monitor, a sleep monitor, a weather tracker, a sunrise and sunset monitor, a current moon phase display, a compass and barometric altimeter.
【Ultra-long 18 Day Battery Life】When fully-charged, you can relax and enjoy up to 18 days of activity and progress with typical usage, or up to 9 days with heavy usage, or up to 40 hours with GPS continuous working mode. Go nonstop with T-Rex Pro watch！