The Samsung Galaxy Fit3 Activity Tracker SM-R390 in Black is a versatile fitness technology device suitable for both indoor and outdoor activities. With a sleek design and one size fits all, this activity tracker is designed for unisex adults. It features a variety of measurements such as heart rate, time, and blood oxygen level, along with sleep tracking and a heart rate monitor. The Samsung Galaxy Fit3 has a battery life of up to 13 days, a 1.6-inch display with a resolution of 256 x 402, and is compatible with Android operating systems. Perfect for gym training, running, and jogging, this activity tracker is a reliable companion for fitness enthusiasts.