Strengths: It's stength is that like most runners I have had many great TIMEX IRONMAN whatches that are easy to use, cheap, and very reliable. So Timex was my first choice?The Timex S/D is reliable. The digits are easy to read on the run, and the stored info is useful.
Weaknesses: Battery life can let you down, but you can check the life before a long run.(this is a function on the whatch).Sat can take a time to kick in, and as such, I leave it outside when I put my shoes on. So many options it can take a while to get the 3 choices you want to monitor on the run.It's biggest weakness is going to be the new Garmin as that gets smaller it is hard to see how Timex will get both unit as one. The arm held unit is a pain and slides down.
Overall: The buttons are were you expect them to be so you know it is Timex. It feels strong and is a good looking package. I would not give it back, but it is suprising that the Garmin brand has passed Timex on this technology. Anyone with £200 to spend should look closely at the option that Garmin are offering and look at the reveiw on the Garmin GPS. Sorry Timex.I have never used a Garmin but I would love to compare