With a waterproof construction, you won't have to worry about wearing this activity tracker during your next swimming or water sports activity. The BGTR030 activity tracker is made of durable, lightweight silicone in a variety of vibrant colors. It will keep you motivated with sedentary alerts that remind you to be active regularly. In addition, it monitors heart rate steps and calories burned. within 30 feet of your homeActivity Tracker with extra strap made of waterproof construction. Lightweight, durable silicone design in a variety of colors Tracks heart rate steps, sleep patterns, and calories burned Specifications: Blue color. Black Color Clock. weight 1 pound