'EVERYTHING YOU COULD NEED FROM A BEGINNER TO A COMPETITOR'
Strengths: Good variety of essential basic functions Longlasting - I've had mine for years! Backlight essential for running in winter Good motivator from estimation of calorie usage.
Weaknesses: I actually have the old predecessor of this and have had no problems really, although not high-tec enogh for serious competitors - more expensive ones can be attched to bikes to give speed and distnace and you can set laps for interval work.
Overall: I have had mine for years and have been really pleased with it. It is useful for most types of fitness fanatics and provides good motivation through tracking calorie usage and average heart rates for training session and races. Worth paying the price compared to more basic models.