Side by side

Boldr Expedition EnigmathvsSeiko Prospex Sea The Black Series

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

Expedition Enigmath
BoldrExpedition Enigmath
MSRP $599
Prospex Sea The Black Series
SeikoProspex Sea The Black Series
MSRP $765
What people say

Owners + reviewers, side by side

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

Boldr Expedition Enigmath

The watch's slide rule function is a convenient feature, allowing for calculations on the go. One potential drawback is the use of the Japanese Miyota 9039 movement, which may be a trade-off for some buyers. Reviewers disagree on whether the quick 'on the fly' adjust bracelet is a more significant advantage than the watch's sapphire crystal for durability and scratch resistance.

Seiko Prospex Sea The Black Series

The Seiko Prospex Sea The Black Series is widely praised for its impressive value and compelling design elements. Reviewers highlight the SLA073's cave-diving-inspired dial, high-quality bracelet, and the robust 8L35 movement, calling it a standout release. The SRPE33 and SRPE39 models are noted for their attractive price, manta ray decorated dials, and excellent LumiBrite lume, though bezel alignment can be inconsistent. The SNJ029 is celebrated for its dynamic, colorful aesthetic, solar charging, and comfortable strap, making it ideal for outdoor adventures. Overall, the consensus is that Seiko Prospex Sea The Black Series models offer excellent value, with specific models lauded for their unique dials, quality finishing, and practical features like solar charging.

At a glance

12 of 29 specs differ
Diameter
Expedition Enigmath41mm
Prospex Sea The Black Series45mm
Power Reserve
Expedition Enigmath42h
Prospex Sea The Black Series41h
Water Resistance
Expedition Enigmath200m
Prospex Sea The Black Series200m
MSRP
Expedition Enigmath$599
Prospex Sea The Black Series$765

Full specifications

Case

5 specs
Category
Tool
Diver
Diameter
41mm
45mm
Thickness
12.8mm
13.2mm
Lug-to-Lug
47.5mm
47.7mm
Lug Width
20mm
22mm

Crystal & Dial

3 specs
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
Enigmath Coconino
Black
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9039
4R36
Power Reserve
42h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$599
$765
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