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Hanhart · Thermosphere

Hanhart Thermosphere 42 mm

Reference 775.274-6428 · Tool · 42 mm

121234567891011Ø 42 mmLug-to-lug 49 mm
Illustration drawn from the specifications: case to scale, colours and style approximate. Not a photo. Photos on the official page

Specifications

Reference
775.274-6428
Family
Thermosphere
Category
Tool
Status
Current
Case material
Stainless steel
Case diameter
42 mm
Case thickness
12.95 mm Official
Lug-to-lug
49 mm Official
Lug width
20 mm Official
Water resistance
300 m
Bezel
—
Calibre
Automatic · calibre not named by the brand

Official product page · retrieved October 22, 2026

Does it fit your wrist?

Enter your wrist circumference. The watch appears to scale on the flat top of the wrist.

121234567891011Lug-to-lug 49 mmFlat top of the wrist 54.1 mm
Top view on a wrist, to scale
Flat top of the wrist 54.1 mmLug-to-lug 49 mmCase diameter 42 mm
Side view, across the wrist

Comfortable

Lug-to-lug 49 mm on a flat top of 54.1 mm: 91 % of the width.

Lug-to-lug is 75 to 95% of the flat top, the usual comfortable range.

Measurements and sources

Brands rarely publish thickness, lug width and lug-to-lug together. Each observation below is kept separate, with who gave it.

Case thickness

Value Type Source Date
12.95 mm Official Hanhart October 22, 2026

Lug-to-lug

Value Type Source Date
49 mm Official Hanhart October 22, 2026

Lug width

Lug width is the gap between the lugs, where the strap fits. It is not lug-to-lug.

Value Type Source Date
20 mm Official Hanhart October 22, 2026

Other Hanhart models

Watch Ø Thickness Lug-to-lug Calibre
Fly Navy Aerosphere 42 mm 774.274 42 mm 12.95 mm 49 mm P024
Pioneer One 42 mm 762.200 42 mm 12 mm — SW200
Pioneer Preventor9 40 mm 752.200 40 mm 12.5 mm — HAN4112
Pioneer Preventor HD12 39 mm 792.810 39 mm 10.5 mm 46 mm P024
Pioneer Silva 38.5 mm 782.210 38.5 mm 10 mm 44 mm —
Preventor HD12 36 mm 793L.890-6429 36 mm 10.5 mm 43 mm SW200-1
Show 22 more
Watch Ø Thickness Lug-to-lug Calibre
417 ES 42 mm H721.210 42 mm 13.3 mm — SW510 M
417 ES Flyback 42 mm H721.201 42 mm 13.3 mm — AMT5100 M
417 ES Heritage Flyback 42 mm H721.212 42 mm 13.3 mm 49.75 mm AMT5100 M
417 ES Moby Dick 42 mm H721.202 42 mm 13.3 mm — SW510 M
417 ES Mocha Flyback Date 42 mm H721L.282 42 mm 13.5 mm 49.75 mm AMT5100 M
ADAC Eifelrennen Anniversary Edition 42 mm 724.200-HFXX 42 mm 14.4 mm 49 mm SW510
417 TI Desert Pilot 42 mm H721L.250 42 mm 13.6 mm 49 mm AMT5100 M
Pioneer 40 mm 716.200 40 mm 15 mm — HAN3703
Pioneer Mk I 40 mm 714.200 40 mm 15 mm — HAN3601
Primus Fly Navy 44 mm 740L.370 44 mm 15 mm — SW510
Primus Pilot 44 mm 740.210 44 mm 15 mm — HAN3809
Primus Racer 44 mm 741.210 44 mm 15 mm — HAN3809
415 ES 39 mm H703.201 39 mm 13.5 mm 46 mm SW510 M
417 ES 1954 39 mm H701.210 39 mm 13.3 mm — SW510 M
417 ES Flyback 39 mm H701.211 39 mm 13.3 mm 46 mm AMT5100 M
417 ES Moby Dick 39 mm H701.202 39 mm 13.6 mm 46 mm SW510 M
Aquasphere 42 mm 772.270 42 mm 12.95 mm 49 mm P024
Pioneer MonoScope 45 mm 732.220 45 mm 16 mm — HAN4212
Racemaster GT 45 mm 736.600 45 mm 16 mm — HAN4011
Red Lion Mk II 39 mm H704L.210-1010 39 mm 13.6 mm 46 mm AMT5100 M
417 TI Desert Pilot 39 mm H701L.250 39 mm 13.6 mm 46 mm AMT5100 M
Silva 38.5 mm 782.230 38.5 mm 10 mm 44 mm P024

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