Product Comparison: Fitbit Blaze vs Fitbit Ionic

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General Specifications
About the Product
Get fit in style with Fitbit Blaze—a smart fitness watch that helps you maximize every workout and every day. With advanced technology in a versatile design, this revolutionary device is built to track your workouts, monitor your performance stats, and gauge your progress. PurePulse continuous heart rate and multi-sport modes enhance every exercise, while next-generation features like Connected GPS and FitStar workouts on your wrist help you take your fitness to the next level. All-day activity and sleep tracking, smartphone notifications and Reminders to Move help you stay on top of your day. And interchangeable band and frames and customizable clock faces on the hi-res color touchscreen let you personalize your style for every occasion. With all this and more, Fitbit Blaze has everything you need to reach your goals, packed into one sleek timepiece.
Get a watch that gives you more with Fitbit Ionic—a motivating timepiece packed with fitness guidance, health insights, music storage, apps & more.
Key Specs
Operating System
Tizen-based wearable platform
Display Size
1.0 in.
1.42 in.
Band Material
GPS Enabled
Internal Memory
2.5 GB
What customers say about "Key Specs"
Fitbit Blaze Smart Fitness Watch
  • I cannot say enough about this product. I really love it. The entire "system" of the band + blaze is very comfortable.
  • I have had it for nearly a year now and am still pleased with it. it charges fine, and operates great.
  • A great deal of thought went into the product design both in capabilities and ease of operation.
  • The band is somewhat uncomfortable, especially to sleep in. The buckle digs into my wrist on the side. I would like to see someone come up with a buckleless, soft silicone band like the apple watch.
  • Plastic wristband gets sweaty and, if you wear it day after day, can cause some skin redness in places. I recommend washing the band in soap and water daily, and taking it off for a little while each day.
Fitbit Ionic Unisex Smartwatch
  • The current (rollout) features are very good, and I only expect them to get better as the system matures.
Size & Weight
10 in.
1.55 in.
1.58 in.
1.52 in.
0.4 in.
0.49 in.
1.44 oz.
1.76 oz.
Display Type
Color LCD
Color LCD
Screen Resolution
348 x 250
What customers say about "Display"
Fitbit Blaze Smart Fitness Watch
  • Large screen, easy to read display
  • The large display is most helpful when you want to view your progress or view an incoming notification during a workout without having to pause.
  • No fancy technology on the screen used. From the specs it looks like a low quality screen, I will not disagree, the pixel that made up the digits can be easily seen when watch is put closer to the eyes.
  • I love the display so I don't have to go to my iphone to look at numbers (like I had to do with my Fitbit One).
  • My only complaints were a lack of more choices on screen display options or configurations and colors.
Charcoal/Smoke Gray
Protection Class
Splash proof
Customizable Watch Faces
Built-In Microphone
Vibration Alert
3-axis accelerometer, Altimeter, Optical heart rate monitor, Ambient light sensor, 3-axis magnetometer
3-axis accelerometer, 3-axis gyroscope, Optical heart rate monitor, Altimeter, Ambient light sensor
Processor Speed
0.12 GHz
What customers say about "Features"
Fitbit Blaze Smart Fitness Watch
  • The functionality of the blaze is amazing. Tracks lots of different exercises. The pedometer seems accurate. When I compared it to the pedometers on two other devices they were all fairly close (within 2-3% of each other). I like the text, call, alarm notifications.
  • If you're looking for the bells and whistles of a smart watch I can't really speak too much on that right now and will update my review over time. However if you are looking for an affordable and effective 24/7 heart rate based calorie tracking system then this is it!
  • Design, decent price for a smart watch looking fitness tracker, Fitbit app and community systems, nice acreen
  • Nice gorilla glass screen that doesn't get scratched
  • Automatically tracks steps, sleep, workouts, heart rate. All viewable easily on the screen
Fitbit Ionic Unisex Smartwatch
  • Automatic sleep tracking - and, it can shut off notifications once sleep is detected.
  • The features are easy to use and access, A few trial and error and you will get how it works. Often use functions are just a few tabs away. You will familiar with it almost instantly.
  • Slow performance from time to time.
  • Can't connect to WiFi, any WiFi, Home, work, with or without password. Any firmware update needs to be done over Bluetooth and it takes 30 minutes to 1 hour. It is ridiculous.
Bluetooth Version
Wi-Fi Compatibility
NFC Technology
Charging Interface
Magnetic Connector
Battery Life
120 hours
120 hours
What customers say about "Power"
Fitbit Blaze Smart Fitness Watch
  • The battery life is wonderful. I bought the charging stand and charge it every night, but it looks like it would last 3-5 days, depending on use.
  • Great battery life (5-6 days for me so far)
  • The battery consistently lasts a solid 5-6 days, and charging now seems less cumbersome as it did in the first few days. I bought a spare charger and keep one at work and one at my bedside.
  • Like all of the Fitbits I've had, battery memory is dwindling with every charge. I'm almost down to 3 days...I will try syncing less but I've never modified the setting.
  • If the Fitbit's power gets too low, it will also disconnect from my phone and refuse to reconnect once it's charged. Since it won't sync, it doesn't show the correct time, and it won't save my activity data to my phone. That means it fails as a watch and a fitness tracker.
Fitbit Ionic Unisex Smartwatch
  • I have a nice, convenient metal surface where I can stick the charger for easy retrieval.
Warranty / Certifications
Manufacturer Warranty
1 year(s)
1 year(s)
Other Information

Other reviews