Drop-in resolution
Donor movement for the Sellita SW330-1
Which movement drops into a Sellita SW330-1 case, and what has to match beyond the footprint.
Drop-in available. The ETA 2893-2 shares the Sellita SW330-1 footprint (25.60 mm x 4.10 mm, centre seconds, GMT 24h hand, date at 3) and is the standard donor.
The Sellita SW330-1 sits in the ETA 2893 / SW330 GMT footprint (25.60 mm x 4.10 mm, GMT hand) group. The ETA 2893-2 share its casing diameter, height and calendar layout, so a case and dial built for the Sellita SW330-1 accept them with the correct dial and hands.
Matching diameter and height is necessary but not sufficient. A donor is only a true drop-in when the dial-foot positions, hand-hole sizes, stem length and calendar layout also match. Two movements can share a case and still need a new dial, re-broached hands or a cut-to-length stem.