GMT stands for Greenwich Mean Time (GMT). There are different time zones in the world, and GMT is one of the standards to unify each time zone. On a watch, the GMT function refers to a watch that can display the time of two countries (/cities) at the same time. Most GMT watches have a scale of 1-24 hours on the bezel position, and the watch has an additional GMT pointer pointing to the scale on the outer ring (sometimes the inner ring) as a second time zone display. The original hour and minute hands display the time in the first time zone (local).

GMT is divided into Traveller's GMT and Office GMT. Traveller's GMT, which is more common in the high-end market, refers to the hour hand that the watch can directly set the local time, which is more convenient for business travelers who travel frequently. The Office GMT will directly adjust the GMT hand when adjusting the GMT, and cannot adjust the local hour hand alone without moving the GMT hand. If it is necessary to adjust the time in the first time zone, the user needs to adjust the GMT hand first, and then adjust the time in the first time zone, which is more troublesome and time-consuming. Therefore, the pricing ratio of Traveller's GMT has always been higher than that of Office GMT.

The Wilton GMT watch launched by Bulova in 2022 is a Traveller's GMT dual time watch. The watch has a diameter of 43mm and is equipped with a Miyota 9075 GMT movement, which is based on the Miyota 9 series movement with the GMT function added, so the frequency of the balance wheel reaches 28800vph. The GMT function of the watch allows the watch to display the time in two places. There is a date display at 3 o'clock. In the center of the dial is the world map, which is displayed in different patterns of the same color, which will not make the dial too messy. The GMT scale of the watch is displayed on the inner shadow circle, and day and night are divided into two different colors, which shows the intention of Bulova's design.

After all, there are still very few choices of high-quality GMT dual-time watches below HKD $5000 in the market. So the Seiko 5 Sports GMT watch, even an Office GMT is enough to make it immediately noticed by the market. The rival Citizen Xingchen launched a Bulova Wilton GMT watch priced at HKD 7400 in its brand Bulova at about the same time, equipped with the Miyota 9075 GMT movement newly developed by the Citizen factory. It is quite Buddhist. Although both are GMT watches, one is the higher-end Traveller's GMT and the other is the affordable Office GMT.

When Lin Tsai wrote this article, the compulsory quarantine in Hong Kong had just switched to the "3+4" model, and it seemed that the 7-day home quarantine or no quarantine was not far away. If you are about to travel or even plan to travel, which GMT watch will you choose as your good partner for traveling around the world?