Casio G-Shock GW6900-1 Men's Solar-Powered Digital Sport Watch - Shock Resistant, Waterproof & Durable for Outdoor Activities, Hiking, Running and Workouts

I am very happy with this watch. This is my first Casio G-Shock and so far, I love it. I think the size and shape are just right and I like the functionality. I was a little worried that it might be a little big and bulky on my wrist but I think it fits just right. I have an average size wrist and the watch doesn't look abnormally big on me.I really like the solar function. I wore Timex Ironman watches for years but changing the batteries was such a hassle due to the difficulty in getting the back off with the wrist band in the way. And I had to replace a couple of watches when I didn't get the back sealed properly and water got inside. I'm hoping that with this solar powered one, battery replacement is a thing of the past! It really doesn't take much effort to keep the battery fully charged. When I got the watch in the mail the battery level was at the third level (of four), or the level just below full charge. Initially it took a little bit to get the charge up to full and it went back and forth from full charge to down a level a few times over the first few days. I'm assuming the watch had been sitting in a warehouse out of the light for who knows how long so it probably needed some extended light exposure to fully charge. After a few days I was careful the expose the watch to direct sunlight for longer periods and that brought the charge up to full and it stayed there. Since then I haven't made any special effort to expose the watch face to light (sun or electric), just the exposure it gets through normal everyday use, and it has stayed fully charged.I've been really happy with the atomic timekeeping as well. The instructions go to great lengths to explain how you need to position the watch a certain way on a window sill at night so that the watch can receive the time keeping radio signals. It sounded like it was going to be a real pain since I prefer to sleep with my watch on. So far my watch hasn't missed the signal once even though it stays on my wrist in bed at night. I imagine that results might vary depending on where in the country (or world) you live and what the surrounding terrain is like. I live in the northeast US and in pretty hilly terrain but so far, no problems with reception.Other than those specifics, I like the overall look and function of the watch. I was concerned the numbers might be a little small but so far that has been fine. Figuring out the controls was not difficult. I did read the instruction manual to find out about some of the specific functions but overall I just played with the buttons a little bit and most of it is pretty intuitive.I've only had the watch for a few weeks so I can't speak toward it's long term durability but it definitely seems very well constructed and I look forward to many years of service. It looks like the band is relatively easy to replace should the need arise. Overall I think it is a great watch. If you are looking for something that is functional and durable, I highly recommend the G-Shock GW6900-1!