3D smart sports pedometer bracelet $ 7.28 Applicable people: children, business, general public, fashion, adults, elderly, other Screen size: 1.8 inches Appearance size: length 215mm width 17mm thickness 8mm Material: Silicone Battery capacity: 40MAH Wearing style: wrist strap Operation mode: push button Interface: USB 3.0 Communication function:not supported Wristband material: food grade silicone Additional functions: step counting, exercise tracking, time/date, calories