Polar RS300X G1 Review


  • Dimensions: 2 x 2 x 1 inches (5 x 5 x 2.54 cm)
  • Primary Use: Cross Sport Training
  • Weight: 1.6 oz (45.36 g)
  • Average Heart Rate: Yes
  • Heart Rate Zone Alarm: Yes
  • Heart Rate Zones: 1
  • Heart Rate Memory: Yes
  • Calories Burned: Yes
  • Lap Timer: Yes
  • GPS sensor included: Yes
  • PC Compatible: Yes
  • Backlight: Yes
  • Software Included: Yes
  • Altitude Function: Yes
  • GPS Enabled: Yes
  • Water Resistance: 50m
  • Replaceable Battery: Yes


  • Multi-sport capable
  • Easy to use


  • No recovery heart rate mode
  • GPS can lose tracking


The Polar RS300X G1 GPS watch is designed for those runners who want to improve the overall quality of the workout that they are receiving. It allows you to track your speed and distance using some of the most advanced technologies on the market.

The sports watch has dimensions of 2” x 2” x 1”, is water resistant, and it is GPS enabled to allow you to be able to follow your overall progress during the course of your workouts.

The RX300X G1 can track your last training sessions and it can store the last sixteen workouts that you have had. This will help you be able to identify any potential weakness you may have by monitoring how your training is progressing and your overall level of performance.

The watch has what is known as Polar Cal, this shows you the overall amount of calories that you are burning during a particular workout and it can store the calories used during all of your workouts over a chosen period of time. This will help you be able to see how you are progressing with short and long term fitness goals.

The RS300X G1 has a language display that allows you to switch to different languages and it has the Polar Own Index Fitness test. This is where the device will calculate the overall amount of Oxygen used during your different workouts; it then will compare this information to show the overall amount of improvement that is taking place and the intensity of your different workouts. This will help you be able to know how your workouts are progressing and which ones are the most effective, so that you can be able to use this information to improve the quality of your workouts.

The Polar RS300X G1 is very easy to use and all levels of runners would find the different features as well as tools that it provides incredibly helpful in improving the overall quality of your workout. Those who have purchased the device in the past have commented about how quick they can be able to receive the satellite signal with this GPS enabled watch. While you do have a choice of GPS watches to choose from, if you are looking for one that can provide you with the tools to help improve the overall quality of your workout the Polar RS300X G1 is worth some serious consideration.

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