Side by side

Resco Custom C9: DLC Gen2, Stealth UDT dialvsSeiko King Seiko KSK

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

Custom C9: DLC Gen2, Stealth UDT dial
RescoCustom C9: DLC Gen2, Stealth UDT dial
MSRP $2,155
King Seiko KSK
SeikoKing Seiko KSK
MSRP $2,000
What people say

Owners + reviewers, side by side

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

Resco Custom C9: DLC Gen2, Stealth UDT dial

Owners widely praise the Resco's dial details, such as small 0.2-second indices and a trident second hand, along with its versatile, strongly cased, traditional diver look. Some owners note the bezel requires breaking in, and one experienced a significant financial loss on a return. Warranty repairs must be sent to the US. Overall, owners rate Resco highly for its distinctive dial elements and robust build, despite concerns about value and repair logistics.

Seiko King Seiko KSK

Owners and reviewers widely praise the King Seiko KSK's sharp, faceted case design and harmonious mid-century aesthetic. Its compact 38.1mm or 37mm size and slim 10.7mm thickness are noted as highly wearable. However, accuracy is a point of contention, with one reviewer reporting a wide range of +25 to -15 seconds per day for the 6R31 movement, while others criticize the standard 6R movement as too thick and a departure from the brand's history. Water resistance is consistently cited as limited to 50 meters, and one owner reported misaligned screws on the caseback and clasp. On balance, owners and reviewers find the King Seiko KSK appealing for its design and wearability, though the movement choice and accuracy are significant drawbacks for some.

At a glance

12 of 29 specs differ
Diameter
Custom C9: DLC Gen2, Stealth UDT dial42mm
King Seiko KSK38.3mm
Power Reserve
Custom C9: DLC Gen2, Stealth UDT dial40h
King Seiko KSK72h
Water Resistance
Custom C9: DLC Gen2, Stealth UDT dial300m
King Seiko KSK100m
MSRP
Custom C9: DLC Gen2, Stealth UDT dial$2,155
King Seiko KSK$2,000

Full specifications

Case

5 specs
Category
Dress
Diameter
42mm
38.3mm
Thickness
13mm
11.7mm
Lug Width
20mm
19mm
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal Shape
Flat
Box
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on Hands

Movement

3 specs
Caliber
Sellita SW200-1
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$2,155
$2,000
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