India Whiskey Charlie[IWC Moderator]
9852
AMT5100M
From their website:
"The Atwood is powered by the innovative AMT5100M caliber, a product of
Sellita’s bespoke AMT Manufacture division—a high-end experimental group
like Mercedes’ AMG or BMW’s M program. The AMT5100M is a manually-wound
column wheel, flyback chronograph caliber with a robust 58-hour power
reserve and 23 jewels."