Grand Seiko Sport Spring Drive GMT Lion's Mane SBGE307

The Grand Seiko Sport Spring Drive GMT Lion's Mane SBGE307 is a current-production watch with a high-intensity titanium case. At 152 g it sits among the heavier watches in the guide, and is priced well above the $1,425 median across the guide. It ships on a matching titanium bracelet rather than a strap.

4 official photos · reader photos welcome

Price

$11,500

Material

Titanium

Grade / type

High-Intensity Titanium

Weight

152 g (with bracelet)

Water resistance

200 m

Type

Other

Case diameter

44.5 mm

Thickness

14.9 mm

Origin

Japan

Movement

Spring Drive GMT, self-winding with manual wind

Caliber

9R66

Power reserve

72h

Complications

GMT, Date, Power reserve

Colour

Grey

Finish technology

Natural finish

Caseback

Titanium and sapphire (display)

Nickel-free

Unconfirmed (clasp or buckle material not confirmed)

Bracelet / strap

High-Intensity Titanium bracelet

Matching bracelet

Standard

Crystal

Dual-curved sapphire, inner AR

Display back

Yes

Dial

White (Lion's Mane texture)

Dial colours

White

Availability

Offered

Status

Current

Not published

Reference, Lug-to-lug, Hardness, Construction, Surface treatment, Lume

Medium confidence Verified Jul 2026 Source: Grand Seiko (SBGE307)

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