Wear this smart device to give off an artsy vibe at social gatherings. Thanks to the Tricrust, you can look charming while staying safe. Functionality If a stranger is giving you the bad kind of attention, press the cuff twice to notify your guardians about your location. Your guardians can monitor your whereabouts if you allow them to. This device makes a soft beep when you get a notification on your smartphone or tablet. Press the cuff once to take selfies on your phone with ease. Body & Design The triangular plate design and rectangular leather strap make the Tricrust stylish and sturdy. Compatibility The Tricrust is compatible with Bluetooth-enabled tablets and smartphones that come with Android 4.3 or newer versions of the operating system. Power The 45-mAh, li-ion polymer battery is rechargeable. It can power this device for up to 10 days when fully charged. You can completely charge this device in about 15 minutes.