Product Comparison: Fitbit Flex vs Fitbit Charge HR

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Fitbit Flex Wireless Activity + Sleep Wristband
Fitbit Flex Wireless Activity + Sleep Wristband
Fitbit Charge HR Wireless Activity Wristband
Fitbit Charge HR Wireless Activity Wristband
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About the product Make fitness a lifestyle with Fitbit Flex—a slim, stylish device that tracks all-day activity like steps, distance, calories burned and active minutes. See how every day stacks up with LEDs that light up like a scoreboard as you get closer to your goal. Then wear it at night to measure your sleep quality and wake with a silent, vibrating alarm. Day or night, Flex fits comfortably around your wrist, is water-resistant, and has a 5-day battery life. It also syncs to computers and 150+ leading smartphones, so you can access your stats anywhere and see your progress in charts and graphs. Make every beat count with Charge HR—a high-performance wristband with automatic, continuous heart rate and activity tracking right on your wrist.
Certifications FCC, CE CE
Distance covered Yes Yes
Weight Smal: 0.47, Large: 0.51 oz. -
Calories burned monitoring Yes Yes
Manufacturer warranty 1 year(s) -
Origin USA China
Overstock 4.2 4.5
Package Charging cable, wireless sync dongle, 1 small and 1 large wristband, flex tracker Wireless sync dongle, Charging cable
Size(s) Smal: 5.5 – 6.9, Large: 6.3 – 8.2 in. Small: 5.4 - 6.2, Large: 6.2 - 7.6, X-large: 7.6 - 8.7 in.
Alarm signals Yes Yes
Ebay 5 4.0
Model Flex Charge HR
OS compatibility Mac, iOS, Android, Windows Mac, iOS, Android, Windows
Sleep quality tracking Yes Yes
Brand Fitbit Fitbit
Product manuals
Protection Waterproof Rain, splash and sweat-resistant
Battery life 5 days 5 days
Manufacturer link
Step counting Yes Yes
Bluetooth 4.0 4.0
Display No OLED
Type Wristband Wristband
Material Rubber Elastomer
Color Black (also available in 7 colors) Black (and also available in 5 colors)
Features - Exercise Tracking, Record workouts in Exercise Mode, then see detailed workout summaries on your smartphone.
Newegg - 3.0
Caller ID - Yes
Heart rate monitor - Yes
Walmart - 4.2
Altimeter - Yes
Amazon - 3.5
Vibration motor - Yes
Accelerometer - Yes
Control - Button

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