|Winding:||Automatic, Bi-Directional Automatic Winding, Central Rotor Automatic Winding|
|Diameter:||25.60 mm (11.5 ligne)|
|Complications:||Hacking Seconds, World Time|
|Hands:||Central Hour Hand, Central Minute Hand, Central Seconds Hand, Central World Time Disc, City Window at 3:00|
|Distinguishing Technical Characteristics|
Clockwise Balance Cock
|Production: 2002 – Current|
ETA’s 2893-3 is a modular world time movement with central seconds. It is derived from the similar ETA 2892A2 and is part of the third-generation ETA 2890 family. Cal. 2893-3 appeared in 2002 alongside the similar ETA 2893-1 and ETA 2893-2 and remains in production today. The main difference between the three is as follows:
- ETA 2893-1: 24 hour central disc, date
- ETA 2893-2: 24 hour central hand, date
- ETA 2893-3: 24 hour central disc
In all three movements, the central 24 hour display is quick-set using the crown in second position and is independent of the central hour hand, which is set using the crown in third position.
ETA 2890 Family Overview
The ETA 2890 family is a series of slim and robust automatic watch movements produced by ETA since 1975. They are generally regarded as superior to the similar ETA 2800 family. Cal. 2890 and its successors is based on an Eterna design, with ball bearings on the rotor and a smaller balance wheel in the modern style. The family remains one of the leading watch movements to this day.
The most well-known movement in this series today is Cal. 2892A2, a highly evolved automatic movement with central seconds and a date wheel. Because of its slim dimensions, Cal. 2892A2 is often paired with modules to add world time, power reserve indicator, chronograph, and other complications.
Distinguishing features of the ETA 2890 family include a smaller balance wheel than historic movements, including the ETA 2824 family, and a large rotor hub located with seven visible bearings. The balance is located at 12:00 when viewed from the back with the crown at 9:00, and is located by a clockwise cock with an eccentric screw for regulation.Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.