Lumecore GMT

The TWCO. Lumecore GMT represents the next evolution of the Lumecore line, extending the design language and functionality of the best-selling Lumecore Chronograph into a mechanical GMT platform built for everyday wear and travel.

Its fully lumed Flint White dial delivers exceptional visibility in low-light conditions, paired with skeletonized matte black hands designed to maximize contrast and legibility both day and night. The watch features a brushed 40 mm stainless steel case with an integrated fixed 24-hour bezel, offering a purposeful and balanced tool-watch aesthetic while maintaining comfortable proportions on the wrist.

Powered by the Miyota 9075 True GMT automatic movement, the Lumecore GMT allows independent adjustment of the local hour hand for seamless travel functionality. The movement is paired with a German-made double-domed box acrylic crystal, chosen for its impact resistance, reduced glare, and neo-vintage character.

The watch is fitted with a tapered FKM rubber strap featuring quick-release spring bars and a machined TWCO.-branded buckle for durability and everyday comfort. A fully lumed BGW9 date wheel was specifically developed to integrate seamlessly with the dial, eliminating the typical dark date window effect in low-light conditions.

The Lumecore GMT delivers a balance of modern mechanical functionality, high visibility, and rugged utility-focused design.

CASE
Brushed stainless steel

DIMENSIONS
40 mm width
48 mm lug to lug

HEIGHT
12.4 mm

LUG WIDTH
20 mm

MOVEMENT
Miyota 9075
True GMT
Automatic winding
Manual winding
Hacking seconds
28,800 vph
42 hour power reserve
24 jewels
Jumping local hour

DIAL
High-gloss enamel
Date at 6 o’clock

LUME
BGW9

LENS
German made acrylic
Double domed box

BEZEL
Fixed 24 hour

CROWN
7 mm screw down

WATER RESISTANCE
10 ATM (100 M)

STRAP
Tapering FKM rubber
Machined buckle

With each order comes a 24-month international warranty. Every watch is thoroughly quality-checked before being packed in our signature Tool Watch Co. packaging, which includes an outer box and a fabric-covered, suede-lined watch box. A warranty card is included, providing quick access to product details, instructions, and care guidelines when scanned.