Light, waterproof and able to keep two time zones at once, the Seastar 1000 Quartz GMT on black rubber is a near-perfect vacation watch. Tissot built it on a 40mm steel dive case rated to 300 meters, then added a 24-hour GMT hand and a distinctive black and green bezel ring.

The rubber strap changes the character of the watch. At just 93 grams it disappears on the wrist, and the black FKM rubber is happy in saltwater, chlorine or a sweaty city afternoon. Meanwhile the GMT function lets you keep home time running while you set local time on the main hands, so you always know whether it is a reasonable hour to call back home. A Swiss quartz movement makes it all effortless: no winding, and a battery end-of-life indicator lets you know when service is due.

Screw-down crown and caseback seal it properly, Super-LumiNova keeps it readable at night, and the quick-release system lets you fit a steel bracelet later if you want a dressier look.

Seastar 1000 GMT on Black Rubber, Reference T120.852.17.051.00

• 40mm 316L steel case, 11.77mm thick, screw-down engraved back
• Black and green bezel ring, unidirectional
• Black dial with indexes, GMT hand and date window
• Swiss quartz movement with GMT function
• Sapphire crystal
• Black FKM rubber strap, standard buckle, 20mm lugs
• Total weight about 93g
• Rated to 300 meters

Two time zones, deep-water capability and almost no weight.