I wear the Promaster daily for about 3 years. Even today, the clock looks like new, that it works accurately and no battery needs to be changed is normal. The clock can be read very well, even at night. Tip: the bracelet is quite narrow and leather is then when you sweat or moisture over time something "smelling" The band of deer, type Heva (Premium rubber) fits perfectly to be quite pricey but worth it !!!