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Dan Henry watch · automatic

Dan Henry 1963 Pilot Watch GMT Automatic

The Dan Henry 1963 GMT Automatic measures 42.5 mm across, 50 mm lug to lug, and 13.9 mm thick, with 22 mm lugs. It fits wrists from ~17.5 cm (flat-fit estimate).

Sources checked · How we source numbers
Case
42.5 mm1
Lug to lug
50 mm1
Thickness
13.9 mm1
Lug width
22 mm1
Dan Henry 1963 GMT Automatic: size drawingDan Henry 1963 GMT Automatic, round case, top and side view to scale: case diameter 42.5 mm, lug to lug 50 mm, lug width 22 mm, thickness 13.9 mm. Bezel, dial and crown size are schematic.lug width 22Ø 42.5lug to lug 50TOPthickness 13.9SIDE
Dan Henry 1963 GMT Automatic, top and side, to scaleDrawing from data, not a photo · mm

Dan Henry 1963 GMT Automatic specifications

Case diameter
42.5 mm1
Lug to lug
50 mm1
Thickness
13.9 mm1
Lug width
22 mm122 mm watches
Crystal
Sapphire crystal with anti-reflective treatment1
Water resistance
10ATM - 100 meters or 330 feet1
Movement
TMI NH341 · automaticTMI NH34 specs
Battery
none: the TMI NH34 is automatic
Years made
start not published
Case code
not in our data yet

On your wrist

The verdict compares the lug to lug with the flat top of your wrist. Balanced from ~17.5 cm, past the edges below ~15.5 cm.

= 6.7 in

At the edge on a 17 cm wrist: the 50 mm lug to lug covers 91% of an estimated 54.8 mm flat top.

Flat top = circumference ÷ 3.1, a community convention, not a measurement of your arm. Compact ≤ 0.75 of the flat top, balanced ≤ 0.89, at the edge ≤ 1. Compare more watches in the watch size calculator.

Dan Henry 1963 GMT Automatic: wrist fitDan Henry 1963 GMT Automatic on a wrist, top view to scale. lug to lug 50 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 0.91: at the edge.wrist, flat topwrist flat ≈ 54.8lug to lug 50At the edge · 50 / 54.8 = 0.91estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Dan Henry 1963 GMT Automatic on a 17 cm wristDrawing from data, not a photo · mm

Actual size on your screen

Calibrate once with a bank card and the drawing shows the Dan Henry 1963 GMT Automatic at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Dan Henry 1963 GMT Automatic: size drawingDan Henry 1963 GMT Automatic, round case, top and side view to scale: case diameter 42.5 mm, lug to lug 50 mm, lug width 22 mm, thickness 13.9 mm. Bezel, dial and crown size are schematic.lug width 22Ø 42.5lug to lug 50TOPthickness 13.9SIDE
Drawing from data, not a photo · mm
01020304050

Dan Henry 1963 GMT Automatic strap size

Lug width 22 mm1: a 22 mm strap with 22 mm spring bars fits between the lugs. 45 other models take 22 mm.

Attachment: not published in our sources.

Find your strap length in the watch strap size tool, with the Dan Henry 1963 GMT Automatic filled in.

22 mm strap: strap diagramTwo-piece strap laid flat (22 mm strap). Lug width 22 mm. Short piece — (unknown), long piece — (unknown). Buckle, keepers and holes are schematic.short —long —lug 22lug 22strap length —22 mm strap
22 mm at the lugs; lengths depend on your wristDrawing from data, not a photo · mm

Movement: TMI NH34

The Dan Henry 1963 GMT Automatic runs on the TMI NH34, an automatic movement. 2 other models in our base use it.

Beat rate
21,600 bph2
Jewels
242
Hacking seconds
Yes2
Hand winding
Yes3

Battery

none: the TMI NH34 is automatic

A mechanical watch has no cell to replace; it needs a service instead.

Same size as the Dan Henry 1963 GMT Automatic

The models nearest to the Dan Henry 1963 GMT Automatic in case width and lug to lug, drawn over it to scale; below, every model within 1 mm of its 50 mm.

Size comparison: Dan Henry 1963 GMT Automatic, Spinnaker SP-5121-AA, Seiko SLA077J1, Seiko SLA079J1Top-view outlines to scale on one centre. A Dan Henry 1963 GMT Automatic: Ø 42.5, L2L 50, lug 22, T 13.9. B Spinnaker SP-5121-AA: Ø 42, L2L 50, lug —, T 15 (vs A: Ø −0.5 L2L 0 T +1.1). C Seiko SLA077J1: Ø 42.6, L2L 49.3, lug 20, T 13.4 (vs A: Ø +0.1 L2L −0.7 lug −2 T −0.5). D Seiko SLA079J1: Ø 42.6, L2L 49.3, lug 20, T 13.4 (vs A: Ø +0.1 L2L −0.7 lug −2 T −0.5).B Ø 42A Ø 42.5C Ø 42.6D Ø 42.6C L2L 49.3D L2L 49.3A L2L 50B L2L 50A Dan Henry 1963 GMT AutomaticØ 42.5 · L2L 50 · lug 22 · T 13.9B Spinnaker SP-5121-AAØ 42 · L2L 50 · lug — · T 15vs A: Ø −0.5 L2L 0 T +1.1C Seiko SLA077J1Ø 42.6 · L2L 49.3 · lug 20 · T 13.4vs A: Ø +0.1 L2L −0.7 lug −2 T −0.5D Seiko SLA079J1Ø 42.6 · L2L 49.3 · lug 20 · T 13.4vs A: Ø +0.1 L2L −0.7 lug −2 T −0.5
A Dan Henry 1963 GMT Automatic and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ADan Henry 1963 GMT Automaticthis watch
  2. BSpinnaker SP-5121-AAW −0.5 · L2L same · T +1.1 mm
  3. CSeiko SLA077J1W +0.1 · L2L −0.7 · T −0.5 mm
  4. DSeiko SLA079J1W +0.1 · L2L −0.7 · T −0.5 mm

Differences against A in mm: W case width, L2L lug to lug, T thickness. Nearest by width and length together, from the published sizes.

Same movement: TMI NH34

Dan Henry 1963 GMT Automatic questions

How big is the Dan Henry 1963 GMT Automatic?

The Dan Henry 1963 GMT Automatic measures 42.5 mm across, 50 mm lug to lug, 13.9 mm thick.

Will the Dan Henry 1963 GMT Automatic fit a 7-inch wrist?

Balanced: the Dan Henry 1963 GMT Automatic's 50 mm lug to lug takes 87% of the ~57.4 mm flat top of a 7-inch (17.8 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 17.5 cm and overhangs the flat top on wrists under about 15.5 cm.

Does the Dan Henry 1963 GMT Automatic need a battery?

No. The Dan Henry 1963 GMT Automatic has no cell to replace: a wound mainspring drives its automatic TMI NH34.

What movement is in the Dan Henry 1963 GMT Automatic?

The Dan Henry 1963 GMT Automatic runs on the TMI NH34, an automatic movement.

What strap size does the Dan Henry 1963 GMT Automatic take?

The Dan Henry 1963 GMT Automatic measures 22 mm between the lugs, so it takes a 22 mm strap with 22 mm spring bars. 45 other models in our base share that width.

Find the strap length for your wrist and the Dan Henry 1963 GMT Automatic in the watch strap size tool.

More Dan Henry watches

Sources

Documents checked · Report a wrong number

  1. 1Dan Henry Watches — 1963 Pilot Watch | Dan Henry Vintage Watches · html · read
  2. 2Time Module Ltd. — Product Line-Up - Mechanical (NH0&NH3); NH34/NH35/NH36 product blocks · html · read
  3. 3Time Module Ltd. — Technical Guide & Parts Catalogue, Cal.NH3 Series (NH34A/35A/36A/37A/38A/39A) - Automatic Mechanical · pdf · read