Side by side

Grand Seiko SBGM245vsZelos Helica Moonphase

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

SBGM245
Grand SeikoSBGM245
MSRP $6,100
Helica Moonphase
ZelosHelica Moonphase
MSRP $1,049

At a glance

11 of 29 specs differ
Diameter
SBGM24540.5mm
Helica Moonphase39mm
Power Reserve
SBGM24572h
Helica Moonphase40h
Water Resistance
SBGM245200m
Helica Moonphase100m
MSRP
SBGM245$6,100
Helica Moonphase$1,049

Full specifications

Case

6 specs
Category
GMT
Moonphase
Diameter
40.5mm
39mm
Thickness
14.4mm
10mm
Lug-to-Lug
48.6mm
39mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Meteorite

Movement

2 specs
Caliber
9S66
Sellita SW288 Moonphase
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$6,100
$1,049

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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 SBGM245

Owners widely appreciate the Grand Seiko SBGM245 for its blend of sport and luxury, with one enthusiast highlighting its superior workmanship over quartz movements. However, opinions on its size vary, as one owner found the SBGM245 too large, preferring the comfort of a different variant. Overall, owners value the Grand Seiko SBGM245 for its refined craftsmanship, though its wearability is a point of personal preference.

Zelos Helica Moonphase

Owners widely praise the Zelos Helica Moonphase for its gorgeous aventurine dial, unique industrial-dress aesthetic, and comfortable wearability, with one owner calling it spectacular and another their favorite Zelos. The moonphase complication is frequently highlighted as beautiful, though some find the double moon distracting or the dial cluttered. A manual-wind movement combined with a screw-down crown is noted as a drawback by some, requiring adjustment and potentially feeling fragile when fully wound, while one owner reports a 43-hour power reserve. On balance, owners rate the Zelos Helica Moonphase highly for its stunning aventurine dial and unique design at its price point.

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