View Full Version : Tweaks to ETA Movement?

02-04-2014, 09:12 PM
Can anyone comment on how Bremont works over ETA movements for the Supermarine 500 i own? Im curious what tweaks are made to that movement, apart from being COSC of course :)

02-05-2014, 03:09 AM
Good question; I'd like to know myself. Well, they're high quality ETA movement since they're COSC certified. I know they use an engraved rotor as well. Beyond that, I don't what other modifications, if any, Bremont makes to their movements.

02-15-2014, 01:43 AM
There's an interesting discussion here: http://forum.atgvintagewatches.com/showthread.php?1999-What-does-Bremont-modify-do-to-their-movements

07-25-2015, 03:04 AM
ETA chronometer grade movements are usually fitted with an upgraded balance wheel and regulating assembly, Anachron balance spring rather than Nivarox, a higher grade pallet fork and higher grade pallet fork stones, and movement decoration. Not sure if Sellita perform the same upgrades but I'd imagine they are similar.