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Zone R420
The LifeTrak Zone R420 is a watch based fitness tracker with a 1.1 inch monochrome LCD display, steps, sleep, and calories.
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Description
The LifeTrak Zone R420 is a watch based fitness tracker with a 1.1 inch monochrome LCD display, steps, sleep, and calories.

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CR's Expert Take

How did it perform in our expert lab testing?

Overall Score

The Overall Score for this model is derived from our expert lab test results.
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Current Range of Tested Fitness trackers
What goes into the Overall Score?
Ease of use
 /  5
Step count accuracy
 /  5
Heart-rate monitor accuracy
 /  5
Versatility
 /  5
Ease of interaction
 /  5
Readability in bright light
 /  5
Readability in low light
 /  5
Ease of pairing
 /  5
Water resistance
 /  5

Detailed Test Results

Overall this model was somewhat easy to use and somewhat accurate for counting steps. With recent version iPhones, our experts found it very easy to pair, very difficult to synch, very easy to interact with, and likewise for recent version Android phones, somewhat difficult to pair, very difficult to synch, and very easy to interact with. It is very easy to attach to the body, and it met its water resistance claim at 98 feet.

About

The LifeTrak Zone R420 is a watch based fitness tracker with a 1.1 inch monochrome LCD display. It has button based ECG stationary heart rate monitor, steps, sleep, calories, and is backlit for use at night. The manufacturer claims a battery life of 1 year. It has the following sensors: accelerometer, ECG. It has extra features such as: replaceable CR2032 lithium coin battery, reversible bands with color on inside. Its dimensions are 1.8 x 0.5 inches (width/thickness) and it weighs 1.6 ounces.

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