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ETA Cal. 2834-2 is an automatic movement with day and date wheels. Unusually, the day function uses an outer wheel, showing the complete name at 12:00 with the date shown at 3:00. This arrangement is often associated with the famous Rolex Day-Date “President” model, though that uses a different movement. The outer wheel required a larger 13 ligne main plate.
Cal. 2834-2 is part of the standard “Mecaline” line at ETA and is still produced as of 2019. It replaced Cal. 2834-1 in 1982.
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The ETA 2836-2 is similar to the ETA 2824-2 but with central day and date wheels. It is part of the standard “Mecaline” lineup at ETA and remains in production as of 2019.
ETA’s 2836-2 is used as the TAG Heuer Calibre 5 Daydate Link.
Clones of the ETA 2836-2 include the Hangzhou 6311, Hangzhou 6460, Sea-Gull ST2100, Sellita SW220-1, and Valanvron VAL-36.
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ETA Cal. 2804-2 is a hand-winding movement. It is a date-only variant of ETA 2801-2 and is closely related to the automatic ETA 2824-2 and ETA 2836-2.
ETA places Cal. 2804-2 in their standard “Mecaline” line and it remains in production as of 2019. It is the updated version of Cal. 2804.
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One of the most common Swiss watch movements, the ETA 2824-2 is the third refinement of the original ETA 2824. Like most ETA movements, Cal. 2824-2 is available in Standard, Elaborate, Top, and Chronometer versions. The similar ETA 2836-2 adds a day wheel. Cal. 2824-2 replaced Cal. 2824-1 in 1982.
Cal. 2824-2 is frequently re-branded by other companies. Examples include Ball 2050, Frederique Constant FC-303, Glycine GL 224, Jean Marcel JM A05, Nord N3, TAG Heuer Calibre 5, and U-Boat U-28.
Since the patents for the design are expired, there are a number of clone movements. Common ETA 2824-2 clones include the following: Hangzhou 6300, Peacock CL3000, Sea-Gull ST2130, Sellita SW200-1, STP1-11, and Valanvron VAL-24.
