Oriental Double Lion introduced new GMT series in March 2011, SDJ02001W0, SDJ02002B0, SDJ02003W0.
 The meaning of GMT: The full name of GMT is Greenwich Mean Time, translated as ‘Greenwich Mean Time’. Greenwich Mean Time is the standard time at the Royal Greenwich Observatory in the suburbs of London, because the prime meridian is defined by the meridian passing there. Theoretically, noon in Greenwich Mean Time is the time when the sun crosses the Greenwich Meridian.
 GMT function: The separate GMT uses a 24-hour clock to indicate the second time. The GMT function provides business travellers who need to travel in different time zones to grasp the local time and those who need communication between the two places.
 Functions: GMT Greenwich Mean Time; fully automatic mechanical watch, manual winding; sapphire glass; 40-hour kinetic energy display; 50 meters waterproof; see-through case back; all-steel case strap