CasioMen's Digital Quartz Watch with Plastic Strap GBD-H2000-1AER, Black, Size one Size fits All, Strap

A bit expensive but works as announced! Battery lasts for a month!

Excelente

The watch is great is you like tracking things like your sleep patterns, heart rate, calories burned per day or steps per day. The watch is very light on the wrist and easy to read. The light does not really illuminate as much as I would like it too, like when your lying in bed. But you can still see it. The APP is not very user friendly, however, once you mess around with it for a while it gets a little easier. Overall, a great watch that recharges itself in the light so I only need to charge it once every three days, even with the heart rate monitor on. The strap feels a little too "plasticky" and is not as comfortable as other straps I have had on the past. Good Buy with the durability of a G-Shock.

I wanted a sports watch for mountain biking and a one that could be worn everyday. And after almost 2 years I couldn’t be happier with this timepiece, the battery life, the accuracy of the GPS is as good as any cellphone, it now acquires the signal in less than two minutes and surely withstands the abuse of trade worker like I am. Everything works in it so long story short I completely recommend it.

I need to monitor my heart rate while resting or active. I already have an Apple Watch for that but I need something that’s dedicated and less distracting. The heart rate measurement is pretty accurate; it reads the same whether it’s from a blood pressure monitor or a cardio machine. The Casio app is pretty good. The only downside I see is app related and not the watch: I wish the health data transfers over to the Apple Health app. Hopefully it’s possible with future updates.

Dark and Hard to See Time

ES un muy buen reloj G-Shock, tiene muchas funciones relevantes como el uso de sus sensores ambientales, es bastante avanzado en general, es sola, tiene tambien funciones para deportes aunque quiza no brille mucho aqui debido a la falta de customizacion, y a que la app movil es obligada para usar muchas de ellas, es una pena que no permita customizar faces sin usar la app, y que no sea posible poner el barometro en un face principal, el reloj es poderoso pero Casio lo tiene bastante limitado con un software que no le hace justicia.

If you want to track your fitness, and not worry about breaking a small "tablet" on your wrist - this fits the bill.Looks like a standard G-Shock with many fitness add-ons.Only negative is that the stopwatch only counts to the second, not the 1/10 of a second.