AUTOMATICALLY TRACK STEPS, DISTANCE, CALORIES BURNED AND ACTIVE TIME. TAP DISPLAY ONE TIME TO CHANGE FUNCTION MODE. SMART DESIGN WITH EASY-TO-USE TECHNOLOGY. NO APP, SMART PHONE OR SOFTWARE REQUIRED. CLOCK FEATURES 12/24 HOUR SELECTION. EASY TO READ LCD DISPLAY AGAINST REFLECTIVE BACKGROUND. WATER RESISTANT UP TO 3 ATM. AIRTIGHT AND RUST RESISTANT STAINLESS STEAL CASE BACK. HIGH QUALITY, COMFORTABLE SILICONE RUBBER WRISTBAND. LONG LASTING BATTERY LIFE. 10 1/2" L X 7/8" W