Mar 28, 20185039 views
Tissot Seastar Navigator chronograph cal. 2070 [Valjoux 7734] movement

Tissot 2070 (Valjoux 7734)

Features
manual-wind chronograph, 60s, 30min, cam switched
sub second
date: set by changing 22-24h

Data
14''', Dm= 31.0mm, Do= 31.3mm
H= 6.65mm
F= 1.25mm
T= 2.5mm
17 jewels
f = 18000 A/h
power reserve 45h

Balance staff U3106

Stem W1188 / W3371
thread 1.2mm / 0.9mm

Mainspring / battery
Zf1337, 1.60 x 12.5 x 0.13 x 430mm

Hands
1.40 x 0.95 x 0.27 / 0.27 x 0.18mm
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YanDoroshenko, torymuller, and 15 others
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Very cool watch. I was just looking at one the other day! Is that the OEM bracelet?
https://www.dcvintagewatches.com/product-page/1970s-tissot-seastar-navigator-valjoux-chronograph
Wrist check needs more movement shots! You are a rockstar.