i have had my vosotok amphibia for one year.
it was fairly accurate when i purchased it, yet most days the past few months i wear my damasko da-36 black.
so i was a bit dismayed to find my vostok losing 26 seconds a day. then i did some snooping and found this post by pacifichrono:
https://www.watchuseek.com/f10/vostok-amphibia-runs-37-seconds-day-440971.html
i went to harbour freight tools and bought a $4.98 watch case opener. once you unscrew the outer ring that holds the case back in place, you can pry off the case back (easy to do) with a small screw driver. then you see what he has posted and can take it from there. you may have to rotate the watch a little to get the rotor out of the way. this will make sense when you see it. while working under a lamp and after six adjustments over two days, my amphibia is now at -12 seconds a day.
i did use a toothpick as suggested. the adjustment made (please see his post) must be very, very minor- almost imperceptibly so. after 4 hours you will see roughly where it is in terms of accuracy and can adjust again if needed.
and if your watch runs slow like mine, you need to consider aiming for +7 seconds or so.
if you aim for 0 +\- it may still end up slow. so i would adjust it, check it four hours later.
and just left the case back on to prevent dust from getting into the movement.
i like the amphibia quite a bit - some watches try and be retro, when the amphibia is retro!
Sent from an Ipad.
it was fairly accurate when i purchased it, yet most days the past few months i wear my damasko da-36 black.
so i was a bit dismayed to find my vostok losing 26 seconds a day. then i did some snooping and found this post by pacifichrono:
https://www.watchuseek.com/f10/vostok-amphibia-runs-37-seconds-day-440971.html
i went to harbour freight tools and bought a $4.98 watch case opener. once you unscrew the outer ring that holds the case back in place, you can pry off the case back (easy to do) with a small screw driver. then you see what he has posted and can take it from there. you may have to rotate the watch a little to get the rotor out of the way. this will make sense when you see it. while working under a lamp and after six adjustments over two days, my amphibia is now at -12 seconds a day.
i did use a toothpick as suggested. the adjustment made (please see his post) must be very, very minor- almost imperceptibly so. after 4 hours you will see roughly where it is in terms of accuracy and can adjust again if needed.
and if your watch runs slow like mine, you need to consider aiming for +7 seconds or so.
if you aim for 0 +\- it may still end up slow. so i would adjust it, check it four hours later.
and just left the case back on to prevent dust from getting into the movement.
i like the amphibia quite a bit - some watches try and be retro, when the amphibia is retro!
Sent from an Ipad.