Pre-owned Tudor Black Bay One 39 S&G ref 79663 (2025) takes the familiar Black Bay DNA and smooths it out into something a bit more refined. The “One” (or Black Bay 31/36/39/41 line) was designed to move away from the brand’s more tool-focused roots and into a cleaner, everyday aesthetic. Same quality, just less overtly sporty. This 39mm model is a great size and weight for most wrists. It’s balanced, easy, and genuinely unisex. The S&G (steel and gold) configuration adds some warmth without going overboard. It has a polished and satin-finished steel case, paired with a yellow gold–capped bezel and crown, plus subtle gold accents running through the five-link bracelet. Inside is Tudor’s manufacture caliber MT5602, a COSC-certified movement with a solid 70-hour power reserve. It’s meant for everyday wear, with a screw-down crown and 100 meters of water resistance. The T-fit clasp is a nice touch, too, with quick micro-adjustments on the fly, no tools needed. Shop Tudor Black Bay Collection