feature | 1 year plus battery life, no charging neededSwim rated safe for swimming and showeringActivity tracking tracks steps, distance and calories burned, monitors sleep and provides a personalized daily step goalToe-to-toe challenge - lets you instantly start a timed step challenge with nearby Vu00edvofit 4 or Vu00edvofit Jr 2 activity trackers (sold separately)Move IQ automatically detects runs and walks and can start an activity timer automaticallyConvenience features includes convenient tools that let yo |