Sinn Model 144 GMT : The Worldtime Chronograph

The GMT version of model 144 makes it easy for frequent flyers and world travelers\ to keep track of things. This is facilitated by the fine mechanical precision for which SINN is known as well as the additional hand with its arrow tip, which can set to a second time zone using the crown.

Technical details

• 144 GMT St: case made of stainless steel, bead-blasted with solid back.(Case diameter approximately 41 mm)
• 144 GMT Ti: case made of pure titanium, bead-blasted with sapphire crystal glass back.(Case diameter approximately 41 mm)

Mechanical Movement
Valjoux 7750 GMT
Self-winding mechanism
25 bearing jewels
28,800 semi-oscillations per hour
Seconds stop function
Shock resistant as per DIN ISO 1413
Anti-magnetic as per DIN 8309

Made of stainless steel, bead-blasted/ titanium, bead-blasted
Sapphire crystal glass in front, anti-reflective on the interior
Transparent case back made of sapphire crystal glass, anti-reflective on the interior
Case back screw-fastened
Crown screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant up to 20 bar (= 200 m water depth)
Low pressure resistant

Hours, minutes, subsidiary seconds
Second time zone on a 12-hour basis
Date display
Tachymeter / Pulsometer scale

Dimensions and Weight
Case diameter: 41 mm
Band lug width: 20 mm
Case thickness: 14,5 mm
Weight without strap: 90 gramme

Dial and Hands
Matte black dial
Numbers and indices coated with luminescent colour
Hour, minute and hand for second time zone coated with luminescent colour

Warranty period 2 years

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