Here’s the perfect watch for the time traveller. It will offer some protection will blending in with the American old west. If things get out of hand in the saloon, just make like you’re checking the time and fill somebody full of lead. That’s because the folks at time travel HQ have replaced the clock gears inside with a 3mm gun.
The hands don’t move, so just act like your watch is broken if anybody asks for the time. As far as the gun, it will most likely annoy rather then kill, but they’ll be so stunned that you shot them with your watch that you’ll be an instant badass and probably become the new sheriff.