Offered in three sizes for your perfect fit (42 mm, 47 mm, and 51 mm), the epix™pro is the ultimate high-performance smartwatch that helps you conquer every hour, one minute at a time. Featuring advanced training technology, an led flashlight and all-day health and wellness monitoring - feel confident that you'll have what you need to leave compromises in the dust. And, you can see it all on a stunning amoled display with a battery that lasts up to 31 days in gesture smartwatch mode or up to 82 hours in gps mode on the 51 mm editions. The 47 mm editions have a battery that lasts up to 16 days in gesture smartwatch mode or up to 42 hours in gps mode. And the 42 mm editions help you meet your performance goals with a battery that lasts up to 10 days in gesture smartwatch mode or up to 28 hours in gps mode.