Once you set up this watch correctly it works like a champ! The book is about an inch thick, but broken down fairly well. I have been wearing it for about 2 months now and have loved it!

This is a great watch with all the features. But if you have a small frame- thin wrist- like I do, the watch may look gigantic on you. Considering the diameter which is a little more than 2 inches, it is made for people weighing 150 lbs or more. If you are, get this watch!

I have had a Casio watch for about a year and now the watchband needs replaced. I was informed by Walmart that they cannot replace a Casio watchband. I called Casio and they told me that as far as they know NO CASIO WATCHBAND CAN BE REPLACED BY A NORMAL WATCHBAND! I had to order a watchband from Casio and they had to know which model it was before I ordered it. Total price: $12.00 shipping, handling and sales tax included. I then asked the representative if instructions would be included because it was a different type of setup instead of pins. HE SAID THAT THEY ARE SUPPOSED TO RECOMMEND TAKING THE BAND TO A JEWELER TO HAVE IT PUT ON!! PLEASE BEWARE OF THIS AS BANDS DO NOT LAST FOREVER!!

Excellent Watch! Does everything it says it can. Very easy to use buttons. A little more learn because of all the functions like changing the degrees from Farenheit to Celcius and vice versa.

My husband originally had a comparable Silva product which turned out to be defective (two different ones both got moisture under the face when he wore them out working in humid, not wet, conditions!). So I decided to get the Casio and he loves it. The readings are accurate and he does not have to carry the instruction book around -- very intuitive. We hike in the NYS Adirondacks so all the features are fun to play with.