This watch is also known as:
Q1738170 , 1738170 .
Dual Time Zone (GMT) Function operated by the bottom crown - Solid Silver Hour Hand Indicates the Local Time - The White Skelentonized Indicates the Second Time Zone which is linked to the AM/PM indicator (the half-moon cutout window with the red outlined arrow). Time & date setting functions are also set by the lower crown. Bi-directional Rotating bezel (protected under the crystal) is set by the top crown. Water Resistant to 100m/330ft by a revolutionary new patented design - Although the crowns are not "screw down" they are equipped with an external butterfly collar that turns 1/2 turn clock wise & counter clock wise (independently of the crown), each collar has red & white enamel indicating arrows. White arrow indicates the crown is secure/water resistant, Red Arrow indicates the crown is non-secure/non-water resistant.