Side by side

Serica Ref. 5303 Diving ChronometervsOak & Oscar The Olmsted 38

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
The Olmsted 38
Oak & OscarThe Olmsted 38
MSRP $1,775

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
The Olmsted 3838mm
Power Reserve
Ref. 5303 Diving Chronometer42h
The Olmsted 3842h
Water Resistance
Ref. 5303 Diving Chronometer300m
The Olmsted 38100m
MSRP
Ref. 5303 Diving Chronometer$1,768
The Olmsted 38$1,775

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
39mm
38mm
Thickness
12.2mm
10.8mm
Lug-to-Lug
46.5mm
44.9mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
Crystal Shape
Flat
Double-domed
AR Coating
Yes
Underside
Dial Color
Enamel Black
Green

Movement

3 specs
Caliber
M100 COSC
Sellita SW300
Beat Rate
28,800 vph
4 vph
Complications
COSC
GMT, Chronograph, Date

Pricing

1 specs
MSRP
$1,768
$1,775

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Oak & Oscar The Olmsted 38

Oak & Oscar The Olmsted 38 is praised for its sharp, stealthy aesthetic with a durable ceramic-coated stainless steel case and a clean, no-date dial. Reviewers highlight its excellent wearability at 38mm and the value proposition at $1,475, which includes two strap options. The watch features a sandwich dial with stencil numerals and orange accents, powered by a modified ETA 2892-A2 movement. Overall, reviewers find Oak & Oscar The Olmsted 38 to be a modern and aggressive take on the classic field watch, offering exceptional value.

From video reviewers

The Olmsted 38 features tightly executed tolerances and an ultra-fine level of finishing. Reviewers did not reach a consensus on any weaknesses. Reviewers did not explicitly disagree on any points.

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