|Winding:||Automatic, Bi-Directional Automatic Winding|
|Diameter:||25.60 mm (11.5 ligne)|
|Complications:||Date, Hacking Seconds, Quick Date Correction|
|Hands:||Central Hour Hand, Central Minute Hand, Central Seconds Hand|
|Production: – Current|
Sellita Calibre SW300-1 is a thin automatic movement designed to be an alternative to the ETA 2892A2. It supports bi-directional winding. Cal. SW300-1 is a slightly-improved version of Cal. SW300.
Cal. SW300-1 is used by many manufacturers. It is used with only cosmetic differences as the following: Bell & Ross BR-CAL.302 and BR-CAL.318, Frederique Constant FC-306, Hublot HUB1100 and HUB1110, IWC 35110 and 35111, Montblanc MB 24.09, Ralph Lauren RL300-1, and TAG Heuer Calibre 7. It is also used with a module for Hublot HUB1112, IWC 35710, 35720, 35750, and 35800, JeanRichard JR66, Montblanc MB 29.15, MB 29.16, MB 29.19, and MB 29.25, and TAG Heuer Cal. 11 (modern), 12 (modern), and 18.