Functional fitness essential in a sleek wristband design.; All-day activity tracking; Display and time; Square OLED tap display, 100mm x 22mm (4" W x 1" H); Diameter, about 8"; Splash-proof; Smart track; Sleep tracking; Floors climbed; Heart rate; Tracks steps, distance, calories burned & active minutes; On-screen workouts; Syncs stats wirelessly & automatically to leading smartphones and computers; 3-axis ac