Bradner Automatic

Ref. SP-5062-AA

Case diameter: 42 mm; Manufacturer spec
Lug-to-lug: 50 mm; Manufacturer spec
Thickness: 14 mm; Manufacturer spec
Lug width: 20 mm; Manufacturer spec

Retail price $370 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 50 mm

How the Bradner Automatic wears

Its lugs add 8 mm to the 42 mm case, close to the 7.1 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 7" to 8.25" (17.8–21.0 cm); below 7" the lugs start to reach the edge of the wrist.

At 14 mm thick it is thicker than 82% of the 79 other dive watches we've measured, so expect it to sit tall on the wrist.

Its 20 mm lug width is one of the most common strap sizes; 104 other watches here share it, so aftermarket straps are easy to find.

Will the Bradner Automatic fit your wrist?

With a 50 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

Wrist	Flat width (est.)	Fit
6"	47.2 mm	Lugs overhang
6.5"	51.2 mm	Snug, lugs near the edge
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Ideal fit
8"	63 mm	Ideal fit

Specifications

Reference: SP-5062-AA
Collection: Bradner
Status: In production
Case material: stainless steel
Crystal: sapphire
Water resistance: 180 m
Bezel: internal bidirectional rotating bezel
Dial: ochre guilloché fumé ('Amber Dawn')
Strap / bracelet: 20mm steel beads-of-rice bracelet, fold-over clasp
Weight: 180 g
Style: Dive

Movement

Caliber: Miyota Miyota 8215
Type: automatic
Power reserve: 42 hours
Frequency: 21,600 vph (3 Hz)
Jewels: 21
Accuracy: -20/+40 s/day

Takes 20 mm straps. See other 20 mm watches and straps.

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 20 mm lug width

All 20 mm watches

These take the same straps as the Bradner Automatic.

Sources

spinnaker-watches.com/products/bradner-automatic-amber-dawn-sp-5062-aa