The vÃvofit 3 tracks any and all of your movement, including inactivity. So while you might lose track of time and forget to move, vÃvofit 3 won't. A red move bar appears on the display and a gentle alert sounds after 1 hour of inactivity. The move bar builds every 15 minutes until you reset it by walking for a couple of minutes. The vÃvofit 3 follows your progress 24/7 thanks to its long-lasting battery life. It automatically monitors your rest when you go to sleep. It's water resistant so you can wear it in the pool or the shower. The vÃvofit 3 learns your current activity level, then assigns an attainable daily goal. As you meet your milestones, vÃvofit 3 will adjust your goal for the next day, gradually nudging you toward a healthier lifestyle. Product Type: Activity tracker Connectivity: ANT/ANT+ Display: Two-color (monochrome) LCD - 64 x 64 pixels Tracking Data: Distance, time, calories burned, heart rate (with optional heart rate sensor), activity, sleep activity, steps taken Band: Black - band X-Large Features: Always-on display, idle alert, changeable band, automatic exercise recognition Battery Run Time: Up to 12 month(s) Weight: 0.99 oz Product Type: Activity tracker Tracking Data: Distance, time, calories burned, heart rate (with optional heart rate sensor), activity, sleep activity, steps taken Features: Always-on display, idle alert, changeable band, automatic exercise recognition, accelerometer Type: LCD - two-color (monochrome) Resolution: 64 x 64 pixels Dimensions (WxH): 0.4 in x 0.4 in Wireless Interface: ANT/ANT+ Form Factor: CR1632 Run Time (Up To): 12 month(s) Name: Band Size: X-Large (fits wrists 165-225 mm) Color: Black Weight: 0.99 oz Preloaded Software: Alarm Clock Protection: Waterproof