FITBIT Charge 2 Small (Blue Strap, Size : Small)

Yes

PurePulse Heart Rate: Automatic Heart Rate Tracking, Reach Weight Goals, Optimize Exercise, Track and Health and Fitness, Manage Stress, Resting Heart Rate, Reminders to Move, Set Goals, Record Workouts

Optical Heart Rate Tracker, 3-axis Accelerometer, Altimeter, Vibration Motor

Android & iOS

Yes

No

-10DegreeC to 45DegreeC K

9144 m

FITBIT

Sports

Blue

FB407SBUS

Charge 2 Small

Digital

Unisex

Stainless Steel

iPhone 4S and Later, iPad 3 Generation and Later, Android 4.3 and Later, Windows 10 Devices, Mac OS X 10.6 and Above

Yes

Yes

Calories Burned, Fat Burn, Cardio, Peak, Multi Sport Modes

Blue

Smartphones, Computers

Android & iOS

Small

Fitbit App

If the Band Gets Wet or Sweat in it, Remove and Completely Dry the Band Before Putting it Back On, Give Wrist a Rest by Taking the Band Off Every Now and Then

PurePulse Heart Rate, Large OLED screen with Tap Display, Multi-sport tracking and Connected GPS, Call, Text and Calendar Alerts

Interchangeable Accessory Bands, Guided Breathing Sessions, Green LED Lights Reflect on Skin to Detect Change in Blood Flow, Auto Sleep Tracking, Silent Alarm, Connected GPS, SmartTrack, Cardio Fitness Level - Powered by PurePulse, Call, Text and Calendar Alerts, Customizable Clock Faces, Memory: Saves 7 Days of Detailed Motion Data - Minute by Minute, Saves Daily Totals for Past 30 Days, Stores Heart Rate Data at 1 sec Intervals During Exercise Tracking and at 5 sec Intervals all Other Times, Water Resistance: Sweat, Rain and Splash Proof but Device is Not Swim Proof or Shower Proof, Material: Elastomer

23 g

OLED

96 x 32

5 Day

Lithium-polymer

Yes

Yes

4

6.1 m

Smartphone Notifications and Syncs Automatically to Computers and 200+ iOS, Android, Windows Devices, Syncing Requires Bluetooth LE and Internet Connection