Longines Ultra-Chron Box Edition Automatic Chronometer Stainless Steel Black Dial Brown Leather Interchangeable Black/Red Nylon Strap Divers Mens Watch L2.836.4.52.8 rpSKU_L38124536 Tritium-based luminescent tubes called LLTs

Tritium-based luminescent tubes called LLTs illuminate the watch through its hands

This gents' DolceVita features a 28

Surrounding it is a uni-directional rotating coin edge dive bezel on a black DLC-coated top ring

A GMT hand with a red arrow tip points towards a 24-hour scale around the inner rim and a date window at the 3 o'clock position adds to its functional aesthetic and charm

Longines Ultra-Chron Box Edition Automatic Chronometer Stainless Steel Black Dial Brown Leather Interchangeable Black/Red Nylon Strap Divers Mens Watch L2.836.4.52.8 rpSKU_L38124536 Tritium-based luminescent tubes called LLTsLongines Ultra Chron Box Edition Automatic Chronometer Stainless Steel Black Dial Brown Leather Interchangeable Black Red Nylon NATO Strap Divers Mens Watch Model# L2. 836. 4. 52. 8 L28364528 Launched in 1968, Longines' Ultra Chron diver was the very first dive watch equipped with a high frequency movement, inspiring the new Ultra Chron with its aesthetic codes, professional diving capabilities, and legacy as a pioneer in high frequency technology.