GMT

A GMT watch shows a second time zone on a fourth hand read against a 24-hour scale, so a traveller can keep home time and local time at once. BeepWear stocks pre-owned GMT models at 40mm and 44mm in steel, yellow gold, white gold and Everose gold.What is a GMT watch? A GMT watch adds an independent 24-hour hand to the usual hour, minute and seconds hands. Because the extra hand completes one rotation every 24 hours rather than 12, its position against a marked bezel or dial ring distinguishes morning from evening in the second zone. Rolex introduced the format on the GMT-Master in the 1950s for Pan Am flight crews.How do you read the two-tone bezel? The two colours on a GMT bezel split the 24-hour scale into day and night, so a glance shows whether the second zone is in daylight. Collectors name the combinations: blue and red is Pepsi, blue and black is Batgirl, brown and gold is Root Beer. BeepWear currently lists Pepsi, Batgirl and Root Beer references alongside a two-tone Zombie.What sizes and metals are in stock? Current GMT stock runs 40mm for the Rolex GMT-Master and GMT-Master II, including references 16758, 126710BLRO, 126710BLNR and 126715CHNR, and 44mm for the Grand Seiko Spring Drive GMT. Cases include stainless steel, 18 karat white gold, Everose gold and yellow gold. The Seiko 5 Sports Field GMT SSK023 and a Tag Heuer Carrera GMT chronograph sit at the accessible end of the range.Is a pre-owned GMT a sensible buy? A pre-owned GMT costs less than the same reference new and the complication is mechanically simple, which is why these models hold up in daily wear. Every piece here is inspected against its reference before it is listed, and each listing states case material, size and condition. Stock is one-of-one: when a reference sells it is gone.