Side by side

Serica Ref. 5303 Diving ChronometervsDryden Heartlander Solar

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
Heartlander Solar
DrydenHeartlander Solar
MSRP $279

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Heartlander Solar38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Heartlander Solar40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Heartlander Solar101m
MSRP
Ref. 5303 Diving Chronometer$1,768
Heartlander Solar$279

Full specifications

Case

6 specs
Category
Diver
Field
Diameter
39mm
38mm
Thickness
12.2mm
11mm
Lug-to-Lug
46.5mm
46mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
101m

Crystal & Dial

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

Movement

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

Pricing

1 specs
MSRP
$1,768
$279

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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.

Dryden Heartlander Solar

The Dryden Heartlander Solar is widely praised for its wearability, with its 38mm case and thin profile making it a versatile, go-anywhere watch. Owners and reviewers highlight its exceptional lume, comfortable president-style bracelet, and compelling $500 price point. The solar power feature is appreciated for its convenience, eliminating the need for winding. Some owners note the 38mm case can feel small on wrists just under seven inches, and one reviewer flags that the prominent crown may irritate some wearers. The use of a Miyota movement is seen as a positive for durability and affordability. On balance, owners and reviewers rate the Dryden Heartlander Solar highly for its excellent wearability and value at the $500 price point.

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