I had been a citizen, who no longer is now waterproof, and had to be replaced by a new clock. I decided for the GW-M5600, which points battery with solar power charging, radio controlled time setting and water resistance were particularly important to me. Overall, the clock meets these requirements. Especially nice I noticed that the clock is relatively easy (at least compared to my old Citizen) and that they seem to be very robust.
A couple of points but dampen my enthusiasm:
1. The bracelet is too short. Moreover, it is too stiff. With a strong wrist buckle sits at an unfavorable spot.
2. The push buttons are stiff and also only with "gingerly" ever use.
3. The alarm sound is too quiet.
So I would recommend the clock under certain conditions; People with slightly narrower wrists feel the bracelet (that bothers me the most) secure as pleasant as I do.
