I have to agree with Lani, I've bought 8 reps recently though this has been on my wrist the entire week. The 3135 clone has kept perfect time, right out of the box. I just need an better bezel insert, servicing, sealing and water testing and it won't be off my wrist for some time. It is unbelievably comfortable to wear and isn't that huge on my wrist (though I'm 6'8", so my fiddy isn't that huge either).