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. 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.