I've only had it for a few days but so far the reserve seams to be approximately 35+ hours but I haven't truly tested it. Seams to keep time pretty well as it lost only 7 seconds in a 24 hour period, it most likely can be regulated to do even better. The bracelet has a very nice "solid" feel to it. The crown looks nice, decent detail. The bezel looks great it's hard to capture it in photos but it really stands out with a nice deep shine. That's about all I can tell you about it as I'm a complete noob to the rep game.