I wanted to another / more recent product (in the area first requirement: be possible battery change both the clock and the belt must.
Polar difference thus made immediately because the belt often has to be replaced completely (I'll never understand why that is not changed '!).
The clock should in my view no frills (such as GPS, pedometer synchronization with PC and and and) have. I wanted a 'normal' heart rate monitor with standard features such as lap counter + lap times, of course, heart rate, calories burned and zone analysis (like my old t1).
I also got ...
'Fiddle' After exactly 10 minutes it was me operating the clock perfectly clear 'is simple and intuitive (good menu concept).
After I created the belt, was the pulse within max. 20 - 30 seconds on the clock.
I made me a fun and this in parallel with a sphygmomanometer measured (with upper arm cuff) 'I was surprised!
The heart rate was at times identical, otherwise the difference was + -2 - absolutely fine!
Also worth mentioning is the positive free design of pages (Favorites) - you can transform this as needed (ie functions such as calorie or lap times - functions that configure an important and interesting on the first page).
There are several pages, which you can make free available.
I will now be more fully test the clock in practice - especially in May pending the next half-marathon.
First impression: buy recommendation!
For the price you get a good solid clock without expensive frills :).