I was pleasantly surprised by the quick delivery, and of course the functionality of this watch and heart monitor. For the price, it is a great unit. Found it very easy to use after reading the concise instructions, and it performs like a champ, allowing me to get serious about measuring my caloric output for any given workout, plus times and heart rates etc. The review function is very easy to use and provides great information. And it's a clean, simple design with all the typical digital watch features one would want.