Kate Spade Bluetooth activity tracker Keep yourself stylishly motivated with this kate spade new york bangle tracker. It records steps taken, sleep patterns and other activities, and it alerts you with lights when you've met your personal goals. This kate spade new york bangle tracker is resistant to damage from dust or moisture, and it operates on a changeable coin cell battery. Measures calories burned To help you monitor multiple fitness activities. Keep track of daily activity levels Measures distance and steps taken. Comprehensive monitoring Tracks sleep activity. Syncs to select Apple® and Android devices Such as iPhone®, iPad®, iPod® touch and cell phones and tablets with Android 4.4 (KitKat) or later for simple wireless communication. *Distance/speed/pace can only be shared on 3G or 4G devices. Please see last photo for minor marks on battery compartment.