The Omron HBF-306C Fat Loss BMI Monitor Tracker in black is a handheld monitor that tracks calories and provides measurements for indoor and outdoor activities. It is powered by batteries with a battery life of more than 7 days and features a digital display for easy viewing. The device is compact with dimensions of 7" x 2" x 7" and weighs 1 lb, making it convenient to use for monitoring fitness progress in the gym and training sessions. The Omron brand ensures quality and reliability in this fitness technology tool. Comes with a custom plastic case. Battery's not included