Replacement Clasp for Fitbit Flex Wireless Wristband-clasp Only (Metallic color, 5pcs)

No charging required! Replaceable coin battery lasts up to six months
Tracks steps, distance, calories burned; monitors and analyzes sleep duration and patterns
Each Deluxe Kit includes one Smart Fit sensor with coin battery, 3 interchangeable color case inserts and 3 different size wristbands (S/M/L) in same color.

This clever activity monitor wristband will silently monitors and records your activities during weekdays and weekend
For you to view results or share achievemement on tablets and smartphones
Slim, unobtrusive design Sync your data wirelessly

Completely waterproof down to 210 Feet
Track distance, steps taken, calories burned and activity level. Monitor sleep and nap cycles to improve quality of rest
Log daily food and moods to learn how you feel over time