The Amfibia is an engineering marvel, As a watch it's basically the Russian diver's contemporary equivalent of the MIG21 that proved that achieving supersonic flight is possible while using barn tools technology.
It's also just as quirky. A friend of mine was part of an engineering team tasked with the modernization of the Romanian air force and he told me that there was a big yellow button inside the cockpit that should never ever be used while the plane was parked on the tarmac, even if this bright color just screams at you to press it. He explained that it collapsed and retracted the front wheel but the designers of the MIG21 decided that painting it yellow was enough of a safety measure. Setting the date on a Vostok is just like that: a bizarre procedure that work, but only when you are aware that this is something that you will find only on a Vostok.
Pull the crown out all the way and hold it firmly because otherwise it will just flop around. Watch how the movement keep running and sometime gets an hiccup. Turn the crown until the date change. You need more than one day jump? No worry, just turn the crown back until the hands are roughly at 9-8, turn it forward to 12 and the date jumps forward again. You really want to set it to the second? Why? In Soviet Russia the time set you, comrade! Push the crown back in and join the collective effort to bring progress to the masses, There is no need to bother about a few seconds here or there when the wind of history is pushing you forward.
In reality it's not too bad. My 710 Amfibia isn't going to break any records for accuracy, but it's good enough to carry me through the day and setting the date the Vostok way is something you learn to live with, and it wouldn't be a Vostok if this feature disappeared.
What's bad is the lume. The paint on the dial makes it look as if there is lume pouring out in buckets out of the dial, but like many other things from Russia, it's all a shame and the paint is just there to mask the fact that there are only pin head size of lume dispersed on the dial.