Garmin Vivofit 4 Activity Tracker – Black, Large

Tracks steps, distance and calories burned, monitors sleep and provides a personalised daily step goal, smartphone compatibility: iPhone and Android
Always-on colour display is easy to read and offers customisation options, including colour themes, watch faces and text phrases
Move IQ feature automatically detects a variety of activities and can start an activity timer for runs and walks automatically
Includes convenient tools that let you set alarms, start a countdown timer, check the weather and find your phone
Small/medium fits wrists with a circumference of 122 to 188 mm, large fits wrists with a circumference of 148 to 215 mm
Safe for swimming and showering with 1+ year battery life
Screen size is 11 x 11 mm