
Finding alternatives to
Seiko 5KX
Ref. srpd51
27 watches that match on case size, movement family, and price band. Sorted by how close the match is.
Case
42.5mm
Movement
Automatic
Category
Sport
MSRP
$350
Microbrand picks· 19
Independent makers covering the same brief — usually with something the mainstream brands don't.

Marloe Watch Company
Solent Timer
42mm · Automatic$507
Automatic · Same size

Spinnaker
All Steel
42mm · Automatic$435
Automatic · Same size

CIGA Design
ATLANTIC
43mm · Automatic$1,199
Automatic · Same size

CIGA Design
HUNTER
43mm · Automatic$499
Automatic · Same size

Formex
Essence Leggera FortyThree
43mm · Automatic$2,520
Automatic · Same size

Sternglas
Hamburg Automatik
42mm · Automatic$463
Automatic · Same size

Sternglas
Hamburg Pro Automatik
42mm · Automatic$755
Automatic · Same size

CIGA Design
BLUE PLANET II
43mm · Automatic$1,199
Automatic · Same size

Ferro
Black
42mm · Automatic$695
Automatic · Same size

Geckota
Maroon Red
41.5mm · Automatic$499
Automatic · Same size

Geckota
Grey Wolf
41.5mm · Automatic$499
Automatic · Same size

Spinnaker
Aegean Blue
42mm · Automatic$169
Automatic · Same size

Sternglas
Naos XL Automatik
42mm · Automatic$463
Automatic · Same size

CIGA Design
EDGE
40.8mm · Automatic$299
Automatic · Similar size

Formex
Essence Leggera FortyOne
41mm · Automatic$2,520
Automatic · Similar size

Marloe Watch Company
Coniston Auto
41mm · Automatic$507
Automatic · Similar size

Marloe Watch Company
Motorsport 105
41mm · Automatic$380
Automatic · Similar size

Marloe Watch Company
Motorsport 25
41mm · Automatic$380
Automatic · Similar size

Lum-Tec
E6
42mm · Automatic$695
Automatic · Same size
Steps up from here· 4
Where the same idea goes when budget isn't the constraint.
In the same price band· 4
Comparable watches at roughly the same money. Often the deciding click for a new buyer.

Seiko
5 Sports SKX series 2024 Special Edition
42.5mm · Automatic$375
Shared caliber (4R36) · Same family (5 Sports SKX series)

Seiko
5 Sports SKX series BAMFORD Limited Edition, Seiko Boutique exclusive model
42.5mm · Automatic$460
Shared caliber (4R36) · Same family (5 Sports SKX series)

Seiko
5 Sports SKX series DENHAM Limited Edition, Seiko Boutique exclusive model
42.5mm · Automatic$430
Shared caliber (4R36) · Same family (5 Sports SKX series)

Seiko
5 Sports SKX series MOONEYES Limited Edition
42.5mm · Automatic$420
Shared caliber (4R36) · Same family (5 Sports SKX series)



