Eco-Drive One AR5064-57L

The AR5064-57L is part of Citizen's Eco-Drive One line, known for being extraordinarily thin. At just 3.88mm thick, it holds the title of the thinnest analog light-powered watch. The 38.6mm case is black stainless steel with a DLC coating and a modified pentagonal shape, inspired by 1970s luxury sports watches. The blue dial is metal, time-only, and sits beneath a 0.15mm sapphire crystal with a clarity coating for readability. It uses the Eco-Drive caliber 8826, which runs on light and stores up to 12 months of power on a full charge.

The black stainless steel bracelet and fold-over clasp with push buttons give it a modern, secure fit. Water resistance is rated at 50 meters, enough for swimming but not diving. This is an engineering-driven piece that also happens to look sleek. See it on the wrist at Edward Jewels & Watches in Willis, TX.