Side by side

Citizen Tsuki-yomi A-TvsGrand Seiko SBGN027

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

Tsuki-yomi A-T
CitizenTsuki-yomi A-T
MSRP $656
SBGN027
Grand SeikoSBGN027
MSRP $3,700

At a glance

12 of 29 specs differ
Diameter
Tsuki-yomi A-T43mm
SBGN02739mm
Power Reserve
Tsuki-yomi A-T40h
SBGN02740h
Water Resistance
Tsuki-yomi A-T100m
SBGN027200m
MSRP
Tsuki-yomi A-T$656
SBGN027$3,700

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
43mm
39mm
Thickness
12mm
12.3mm
Lug-to-Lug
46mm
45.9mm
Lug Width
22mm
19mm
Material
Super Titanium
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Red
Black

Movement

2 specs
Caliber
H874
9F86
Type
Solar
Quartz

Pricing

1 specs
MSRP
$656
$3,700

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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.

Citizen Tsuki-yomi A-T

The Citizen Tsuki-yomi A-T is widely praised for its gorgeous, detailed moonphase complication, available in gray, blue, or red, and its visually light Super Titanium case. Reviewers and owners alike highlight the comfortable wearability offered by the 43mm case, which is 11mm thick with short lugs and features a mix of brushed and polished finishes. The radio-controlled atomic timekeeping and Eco-Drive movement are noted as key features, along with a world time zone guide on the case back. Some users find the pushers and crown for setting time zones and hemisphere settings, along with the chapter ring functions, to be unintuitive. On balance, owners and reviewers rate the Citizen Tsuki-yomi A-T highly for its striking moonphase display and comfortable, lightweight titanium construction at a great price.

Grand Seiko SBGN027

Owners widely praise the Grand Seiko SBGN027 for its exceptional Zaratsu polishing, compact 39mm size, and versatile monochrome aesthetic, noting its thin profile and suitability as a grab-and-go watch. The 9F quartz movement delivers highly accurate timekeeping, with one owner reporting +/- 10 seconds per year. However, some find the lume limited, the bracelet lacks micro-adjustments, and the GMT hand can be easily mistaken for the minute hand. One owner reported a black index on the bezel disappearing after a couple of months. On balance, owners rate the Grand Seiko SBGN027 highly for its premium finishing and accurate HAQ GMT movement in a wearable size.

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