The Sellita SW215-1 is the main competitor to the ETA caliber 2804-2, but with an additional 2 jewels. You may have seen this movement written as the SW-215 but according to Sellita, the correct way to spell this caliber number is SW215 without a hyphen. Many reputable watch companies are using this movement as an alternative to the ETA mechanism due to it being more economical and readily available.
Current documentation for this caliber is dated 9/20/2018, so this movement is at least this old.
In Sellita’s own words:
“Manual winding version of the SW200-1, the SW215-1 is striking notably for its slimness (only 3.35 mm with date and central sweep seconds), reliability and robustness. Just like the SW200-1, the SW215-1 comes in many versions, including numerous small complications.”
The caliber SW215-1 is available from Sellita in 3 different finishes: Standard, Refined, and Tailor-Made.
Standard Finish – Bulk sand-blasted and nickel plated. Options include engravings, blue screws, rhodium plated, gold plated.
Refined Finish – Bridges with Geneva stripes, main plate with circular graining, snailed crown-wheel, snailed ratchet, and rhodium plated. Options include engravings, blue screws, snailed barrel, gold plated.
SW295-1 M – Small seconds at 9:00, date subdial at 3:00
According to Sellita, the average rate should be within +/- 12 seconds/day. There is another variation of this caliber that Sellita designates as “Special” and is said the keep time within +/- 7 secs/day.
According to Sellita it takes a minimum of 23 turns to of the crown to wind this movement. Once fully wound, the average power reserve is about 42 hours.