Fitbit Flex is a fitness wristband for active people. Through its many sensors, it analyses your daily activity and notifies you of the achievement of its objectives. Thanks to the numerous sensors, applications and compatibility with multiple devices it is one of the most versatile trackers in price to $90 Read More
Polar offers, in addition to heartrate monitors and smartwatches, typical training features have also Polar Loop wristband that allows you to Convenience measurement of your daily activities 24 hours a day, 7 days a week. Read More
Small 5.5” - 6.5”
Large 5.5” - 7.9”
5.7" - 9.4"
wristband is made of flexible, durable elastomer material & surgical-grade stainless steel clasp
Polyurethane, ABS + electro plating, PA GF,
5 white indicator lights
85 LED lights in 5 x 17 matrix
up to 5 days
Battery life: up to 6 days
One to two hours
-4° to 113°F
32° to 122°F
Maximum operating altitude:
It is sweat, rain and splash proof. However, the device is not swim proof.
Surface swimming, shallow snorkeling and similar activities.
Fitbit Flex is equipped with five white LEDs light indicator that notifies us regarding the daily progress and the amount you missed to achieve the objective. (See LEDs light up as you progress toward your daily goal). Fitbit Flex is available in 10 colors. Applied rechargeable battery allows for five days of work which is standard in this class and its charging time is one to two hours,. Unfortunately, despite the basic water resistance, the device will not be able to be used while swimming. Read Full Specs
Polar Loop is equipped with 85 LED lights in 5 x 17 matrix that informs about the various functions of the device and about your activity. Loop is only available in three colors. Applied rechargeable battery allows for six days of work, which is a good result for this class of devices. This device allows swimming and diving up to 20 meters. Read Full Specs
2a. Tracking Features
Activity & Inactivity
Fitbit Flex is equipped with typical sensors for counting steps, distance travelled, calories burned, and track daily activity. This device allows you to set your own goals and achievements and shows the status of their implementation. Fitbit Flex measures the quality of your sleep and has a mild vibrating alarm that wakes you without waking your partner.
Polar Loop has the typical sensors for counting steps, distance traveled, calories burned, and track daily activity. This device allows setting your own goals and achievements and shows the status of their implementation. Measures the quality of your sleep as well. After purchasing, an additional sensor such as HR. Polar H6, or H7 will fill our hearts employment information during our training.
2b. Other Features
Extra non standard
Add heart rate to your workout with the H7 sensor
Sync Polar Loop with an H7 Bluetooth Smart heart rate sensor for accurate heart rate while working out. Get credit for calories burned during activities where you arms are stationary such as indoor cycling.
Thanks to the barcode scanner and extensive food database, the device quickly enters data that will help calculate calories consumed.
Polar Loop also features a watch.
3. Synchronization & Compatibility
iPhone 4S and later
iPad 3 and later
iOS 6 and newer
iPhone 4S and iPhone 5 series and iPod touch (5th gen. or newer)
Android 4.3 and later
Windows Phone Compatibility
Mac OS X 10.6 and up
Mac OS X Compatibility
Mac OS X 10.6 and up
Windows Vista and later
Windows XP, Windows 7, Windows 8 and later
My Fitness Pal
Polar Flow app
You can view progress in your training on your computer or smartphone. Fitbit Flex is compatible with iOS, Windows Phone, Mac OS X, Windows, and Android. Through numerous applications, you can share your results with friends, which certainly will further motivate you to continue the effort. Available trap allows you to keep a detailed record of your activity, of meals, quality of sleep, and many others.
Polar Flow app records detailed and advanced analysis of your day's activity, time, and quality of sleep. On the basis of the data sent training, you can analyze your activity and plan future training sessions.
4. The Bottom Line
• Good support for users on the part of Fitbit
• Compatible with multiple systems and devices
• Work with HR sensor available in the extended package
• Inability to swim with the device
• Short battery life
• No display of information
• Lacks a watch
• Short battery life