ETA Caliber 2893-2

Manufacturer	ETA
Caliber Number	2893-2
Lignes	11.5”’
Diameter	25.6mm
Height	4.10mm
Jewels	21
Power Reserve	42 hours
Beat Rate / Frequency	28,800 bph / 4 Hz
Lift Angle	51 degrees
Anti-Shock Device	Incabloc
Rotor Winding Direction	Bi-directional
Hand-Windable?	Yes
Hand Count	4
Functions	Central hours; central minutes; central seconds; central second time zone GMT hand (24 hours); date at 3:00
Hacking Seconds?	Yes
GMT Type	Caller/office style
Caliber Number Location	Under the balance wheel
Country of Manufacture	Switzerland, Swiss made
Known Models	Sinn 857 S UTC, A. Schild Heinrich GMT, Unimatic U4S-T-HS (Add your watch in the comments below!)

The ETA caliber 2893-2 is part of the Mecaline Specialities line of ETA movements. This caliber is available in different grades and can be supplied by ETA with a Chronometer rating. The 2893-2 is very similar to the ETA 2892-A2 except that it has a modular GMT complication. Official ETA tech sheets were found dated as far back as 2002, showing that this movement has been in production for at least that long. The example in the photos is from a Sinn 857 S UTC.

Setting the GMT Hand:

The 24 hour GMT hand sets independently. Unscrew crown and pull to position I, turning forward/clockwise will adjust the GMT hand by one hour increments. Turning the crown backwards/counter-clockwise will adjust the date. This is very convenient because you can adjust the GMT hand without hacking (stopping) the movement. For GMTs that require hacking the movement to adjust the GMT hand, it also requires readjusting the time.

Caliber Number Location:

On genuine ETA 2893-2 movements, the caliber number is located on the plate beneath the balance wheel. The ETA shield logo is also present. To the left is an origin/date code with a sequence of letters and numbers. On the example movement pictured here the code is: V8DJ6. The V8 code indicates that the movement was produced in Switzerland.

2893-2 Image Gallery:

Watch brands using this movement as a base caliber:

Breitling uses a COSC grade ETA 2893-2 as a base for their Breitling caliber 32 (aka B32). If you know of any other brands that apply their own caliber number to the 2893-2, please comment below.

Additional Resources:

• Official ETA page
• ETA 2893-1-2-3 Variations
• ETA movement grades explained