JAWBONEUP All-Day Life long Wristband UP24 (Onyx/Small) Incredible wrist band will analyze and give you advice about cycle of your sleep, diet, exercise in real-time with the free application. Wireless data synchronization with Bluetooth 4.0. Approximately 7 days of usage with a full charge Living waterproof feature.Anti-allergen TPU rubber is used, which is gentle to the skin. UP24 is always connecting to your smartphone with Bluetooth Smart.It updates the latest progress of your goal in real-time and will help you to achieve your goal by providing data as needed Can be used with iPhone 4s or later, iPod touch 5th, iPad 3rd generation or later, iPad mini or later,Some Android devices (HTC One, Galaxy Note 3, Galaxy Note 2, Galaxy S3 and S4 Galaxy, LG Nexus 4, LG Nexus 5, Xperia Z1, Xperia Z), Android 4.3 or later and Bluetooth Smart models