Side by side
Grand Seiko SBGW306vsNOMOS Glashütte Tetra 27 duo
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
16 of 29 specs differDiameter
SBGW30636.5mm
Tetra 27 duo27.5mm
Power Reserve
SBGW30672h
Tetra 27 duo53 hoursh
Water Resistance
SBGW306100m
Tetra 27 duo50m
MSRP
SBGW306$17,900
Tetra 27 duo$2,090
Full specifications
Case
7 specsDiameter
36.5mm
27.5mm
Thickness
11.7mm
6.1mm
Lug-to-Lug
42.7mm
38.5mm
Material
Gold
Stainless Steel
Finish
Brushed and polished
—
Water Resistance
100m
50m
Caseback
Solid
—
Crystal & Dial
4 specsCrystal Shape
Flat
—
AR Coating
Yes
—
Dial Color
Black
White
Indices
Applied
—
Movement
4 specsCaliber
9S64
DUW 4001
Beat Rate
28,800 vph
21,600 vph
Power Reserve
72h
53 hoursh
Jewels
25
17
Pricing
1 specsMSRP
$17,900
$2,090
Follow this matchup
Get a note when Grand Seiko SBGW306 vs NOMOS Glashütte Tetra 27 duo gets more votes, a community discussion, or a price drop. No account needed.
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Grand Seiko SBGW258vsNOMOS Glashütte Tetra 27 duoGrand Seiko SBGW262vsNOMOS Glashütte Tetra 27 duoGrand Seiko SBGK006vsNOMOS Glashütte Tetra 27 duoNOMOS Glashütte Lux white goldvsNOMOS Glashütte Tetra 27 duoAtelier Wen Ancestra Launch EditionvsGrand Seiko SBGW306Atelier Wen Millésime 2025 — Perception 漩 (Xuán)vsGrand Seiko SBGW306