I bought this watch for many reasons, but will it simple: it works perfectly, it is easily adjustable (if it advances or retards, do not worry, a small lever allows adjustment - but you will in no need, it is perfectly at the set time of origin), it is light, it does not require expensive technology to the planet (solar, kinetic) and, moreover, I can tell the time without my glasses ( +2.0 magnifying glasses, presbyopia requires). I am fully satisfied.