Technical Infomation of Bell & Ross WW1-97 Reserve de Marche

[Reeve]

Hi all,

I'm new in the forum.

Recently I have my eyes on the BR WW1-97 Reserve de Marche. The official website didn't have much useful information about its movement.

Anyone in the forum have the idea on its movement?

Thanks.

[chrisyen]

so far BR always use ETA 2897
for all its power reserve models

[Reeve]

Thanks for your input!