Side by side

Grand Seiko SLGA009vsNOMOS Glashütte Tetra 27 duo

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

SLGA009
Grand SeikoSLGA009
MSRP $9,800
Tetra 27 duo
NOMOS GlashütteTetra 27 duo
MSRP $2,090

At a glance

17 of 29 specs differ
Diameter
SLGA00940mm
Tetra 27 duo27.5mm
Power Reserve
SLGA009120h
Tetra 27 duo53 hoursh
Water Resistance
SLGA009100m
Tetra 27 duo50m
MSRP
SLGA009$9,800
Tetra 27 duo$2,090

Full specifications

Case

7 specs
Diameter
40mm
27.5mm
Thickness
11.8mm
6.1mm
Lug-to-Lug
47.9mm
38.5mm
Lug Width
22mm
18mm
Finish
Brushed and polished
Water Resistance
100m
50m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Black
White
Indices
Applied

Movement

5 specs
Caliber
9RA2
DUW 4001
Type
Spring Drive
Manual
Beat Rate
28,800 vph
21,600 vph
Power Reserve
120h
53 hoursh
Jewels
25
17

Pricing

1 specs
MSRP
$9,800
$2,090

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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.

Grand Seiko SLGA009

The Grand Seiko SLGA009 "White Birch II" is praised for its Spring Drive Caliber 9RA2 movement, offering exceptional accuracy of ±0.5 seconds per day and a 120-hour power reserve. Reviewers highlight its refined dial texture, inspired by Shinshu forests, and the Series 9 design with a frost-finished movement. The watch features a 40mm stainless steel case and a power reserve indicator on the movement bridge. However, its price of $8,600 to $9,100 USD is noted as relatively expensive, reflecting Grand Seiko's increasing price points. Overall, reviewers consider the Grand Seiko SLGA009 a highly refined timepiece, with its advanced Spring Drive movement and aesthetic improvements being key strengths.

NOMOS Glashütte Tetra 27 duo

Owners widely praise the NOMOS Glashütte Tetra 27 duo for its ideal small and light wearing dimensions, beautiful dial that shifts with lighting, and gorgeous blued hands, with some finding its 27mm size perfect for vintage preferences. The watch is noted for its precise, Art Deco-inspired design and good finishing. However, some owners and reviewers consider the 27.5mm size too small, labeling it a women's watch, though others find it unisex and note its square shape can make it wear larger. One owner flags the buckle as disappointingly generic and the grey suede strap as prone to getting dirty. Overall, owners and reviewers highly regard the NOMOS Glashütte Tetra 27 duo for its elegant design and comfortable wearability at its price point.

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