Omega 33.3 CHRO

Based on Lemania 15 CHT, introduced in 1931. In Omega version with compensating balance and Breguet hairspring.

Data: Omega 33.3 CHRO

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  17 jewels, manual wind chronograph, 60 s, 30 min counter.
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  Size: 33.30 mm.
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  H: = 6.45 mm.
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  N: = 18.000 A/h.
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  Power reserve: 44 h.
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  Mainspring: 1,35 x 12 - 0,14 - 400 mm.

Versions:

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  33.3 CHRO: single pusher chronograph (1932).
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  33.3 CHRO T1: two pusher chronograph (1935).
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  33.3 CHRO T2: for waterproof case (1938).
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  33.3 CHRO T3: = T1 with modified jewels (1940).
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  33.3 CHRO T4: = T2 with modified jewels (1940).
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  33.3 CHRO T5: = T3 with adjustable minute jumper (1942).
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  33.3 CHRO T6: = T4 with adjustable minute jumper (1942).
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  170: (33.3 CHRO T5 PC AM), incabloc, antimagnetic (1949).
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  171: (33.3 CHRO T6 PC AM), incabloc, antimagnetic (1949).