UP24 Wristband (Small) - Persimmon This JawboneUP24 JL01-16S-US wristband keeps track of steps taken, distance traveled, hours slept and more for comprehensive fitness and sleep monitoring. The downloadable UP app lets you wirelessly sync your compatible Apple device. Features: Tracks a variety of fitness metrics Including steps taken, distance traveled, calories burned and active time vs. idle time. Also tracks sleep metrics, such as total hours, time taken to fall asleep and number of times you wake up. Smart Alarm and Power Nap features Gently wake you at the right moment in your sleep cycle to help make sure you wakerefreshed. Wireless syncing For real-time notifications to keep you up to date on your sleep and activity goals. Downloadable UP app Makes iteasy to monitor your goals and interact with friends using your Apple iPhone 4S, 5, 5c and 5s, iPad 3rd generation, iPad with Retina, iPad mini andiPod touch 5th generation. Nutritional monitoring Allows you to use your device to take a photo, scan a barcode and search the UP database, so you can easily log calories, fat, carbohydrates, protein, sugar, fiber and sodium. Customizable idle alerts Remind you to stay active. 32 mAh lithium-ion polymer battery Offers up to 7 days of use on a full charge. Small band size Providesan optimal fit for wrists 5-1/2 - 6 in circumference.