This slim wristband tracker, available in multiple colors, complements your style with its distinctive design, metal trim accents and bright, easy-to-read display. The display is only on when you need it. And when it’s on, it auto-adjusts to ambient light levels, so it’s visible even in bright sunlight. Whether you’re going to the office, the gym, the pool or anywhere in between, vívosmart 4 is the perfect fit for your lifestyle. Customer Care Mail Id:- support@ossinfocom.com Contact number:- 1800-121-00-1818