Side by side

Serica Ref. 5303 Diving ChronometervsBoldr Field Medic

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
Field Medic
BoldrField Medic
MSRP $299

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Field Medic38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Field Medic40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Field Medic200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Field Medic$299

Full specifications

Case

5 specs
Category
Diver
Tool
Diameter
39mm
38mm
Lug-to-Lug
46.5mm
44mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Enamel Black
I

Movement

4 specs
Caliber
M100 COSC
Seiko VK64
Type
Automatic
Quartz
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$299

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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.

Boldr Field Medic

Owners widely praise the Boldr Field Medic for its lightweight titanium case, robust build, and functional pulsometer, often highlighting its value and suitability for medical professionals. The watch is described as a solid tool watch with a crisp finish, 200m water resistance, and sapphire crystal, with some owners finding it a versatile and well-built piece that rivals more established brands. The lume is noted as visually striking but not long-lasting, and the pulsometer is seen by some as a unique decorative element or occasionally handy tool. Some owners find the watch wears small, and a few prefer a continuously running seconds hand over the pulsometer's timer function. Overall, owners rate the Boldr Field Medic highly for its practical design and robust construction at its price point.

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