Grand Seiko Sport GMT 40.5mm

$7,900.00

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200M / 20 ATM
40mm
Automatic winding
72 hours

This high-performance Grand Seiko sports watch combines robust functionality with the convenience of a GMT complication, perfect for frequent travelers. The orange GMT hand enables easy tracking of a second time zone, while the independently adjustable hour hand allows for seamless local time changes without affecting accuracy. With a vibrant green dial, bold LumiBrite-filled hands for optimal visibility, and a recessed screw-down crown at four o’clock, the watch offers both practicality and security. Water-resistant to 20 bar and housed in a compact 40.5mm case, it delivers serious capability in a refined, travel-ready design.

Grand Seiko Watch Warranty

The period of the Grand Seiko worldwide warranty is five years from the date of purchase.

Model Number

SBGM247G

Shipping & Returns

Free FEDEX overnight shipping on all Grand Seiko watches. Our return policy is 10 days for your money back, or 30 days to exchange.

Technical information about this watch

Grand Seiko Sport GMT 40.5mm

200M / 20 ATM water resistance

Water resistance indicates a watch's ability to withstand moisture and water. Ratings are measured in metres (M) or atmospheres (ATM). For instance, 30M (3 ATM) is suitable for light splashes, while 100M (10 ATM) and above are ideal for swimming and diving. Regular maintenance helps retain water resistance over time.

GS Calibre 9S66 Automatic winding

Caliber 9S66 builds on the performance of Caliber 9S65 by adding a GMT function, making it ideal for travelers who require precision across time zones. The local hour hand can be adjusted independently—without stopping the minutes or seconds hands—preserving the watch’s high accuracy. With a mean daily rate of +5 to –3 seconds and a power reserve of approximately 72 hours, this automatic movement vibrates at 28,800 beats per hour and contains 35 jewels. It features a 24-hour GMT hand and a quick correction function for seamless time zone adjustments, embodying Grand Seiko’s dedication to precision and practicality.

40mm case size

Case size, measured in millimetres (mm), impacts the watch's look and fit. Men's watches typically range from 38mm to 46mm, and women's from 26mm to 36mm. Larger cases make a bold statement, while smaller cases offer a classic look. Choosing the right size ensures comfort and style.

72 hours power reserve

Power reserve is the duration a watch runs on a full wind or charge. Mechanical watches usually offer 40 to 80 hours, with some extending to several days. Quartz watches, powered by batteries, last several years. Knowing the power reserve helps maintain accurate timekeeping.