The XL Promaster Marine is great, easy to read, large date display, charges in the sun (in the light) on etc. Previously I had a Promaster Sea Analog Citizen, an automatic. After 6 months, I had to convert, because the crown was canceled. This was perhaps not surprising, because this clock was so inaccurate that it be permanently readjusted need. The Austauschuhr must be readjusted again. Long story short, who needs a reliable clock, should be equal to take the Eco-Drive.