Side by side

Serica Ref. 5303 Diving ChronometervsNIMA Watches NIMA GMT (NH34)

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

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.

NIMA Watches NIMA GMT (NH34)

Owners widely praise the NIMA Watches NIMA GMT (NH34) for its value, with some finding the fit and finish excellent and the adjustable clasp superior to others. The Seiko NH34 movement is noted for allowing the GMT hand to set without interrupting the seconds hand and for fitting into NH-compatible cases. One owner highlights the strong and long-lasting lume on the hands. However, some owners find the bezel too busy or chunky, and there is a desire for larger sizing options. The use of acrylic crystals on watches priced around $600 is criticized as not premium. Accuracy figures vary, with some owners questioning theirs while others find it great for the money. Overall, owners rate the NIMA Watches NIMA GMT (NH34) highly for its value and functional GMT hand, despite some aesthetic criticisms.

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
NIMA GMT (NH34)39mm
Power Reserve
Ref. 5303 Diving Chronometer42h
NIMA GMT (NH34)40h
Water Resistance
Ref. 5303 Diving Chronometer300m
NIMA GMT (NH34)200m
MSRP
Ref. 5303 Diving Chronometer$1,768
NIMA GMT (NH34)$636

Full specifications

Case

6 specs
Category
Diver
Thickness
12.2mm
12.8mm
Lug-to-Lug
46.5mm
46.2mm
Lug Width
20mm
20mm
Material
Stainless Steel
Stainless Steel (Black PVD)
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Anthracite Grey
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
Seiko NH34
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$636
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