Originally Posted by dantexeventer
A watch isn't necessary for a beginner - in fact, I'd rather see a BN/N rider without it. Your trainer should teach you to be able to feel what 250 mpm is, 350 mpm, 450 - and if you maintain a good 300-350 mpm around a BN/N course you'll be fine, time-wise.
I was going to say the exact same thing. Also, I'm pretty sure in the USEA rulebook, at the very back, there's a checklist given of all the items you could possibly need at a show. Either that or it's in the omnibus. Either way, they may also have it online at USEA - United States Eventing Association (Eventing, Combined Training, Three Day Event, Horse Triathlon, Equestrian Sport)