With NFC - Near field communications The UW-101NFC is equipped with a 3-axis accelerometer, which detects motion in all directions. This technology allows it to accurately track steps and distance walked and calculates the calories burned even when carried in a pocket or bag. Features: -Built in NFC Forum Type 3 Tag wireless interface module -3-axis accelerometer -Slim & compact body -Displays steps, distance, and calories -14-day memory -Clock -Motion indicator to display walking intensity