Tracker can be used with adjustable wristband or belt clip (both included) * Wristband fits wrists up to 8 * Sync the iChoice Star with the free mobile app and online website to track your steps/distance traveled weight food intake blood pressure heart rate pulse rate oxygen saturation and sleep progress * Syncs with your iPhone (4S+) iPod Touch (5th gen. +) or Android (4.3+) device * Retail packaging