Order Now! ✅ 30-Day Free Returns ✅ 2-Year Warranty ✅ Free Worldwide Shipping. TSAR BOMBA Reactor TB8213 Won the French Design Award and the Gold Muse Award, is a fashion automatic interchangeable men’s watch. Features a stainless steel case. Powered by a Japanese automatic movement. Unique Time-Reading Mechanism: Break free from traditional hands and experience a time-reading logic of the future. Top dial: minutes; center dial: seconds. Lower main display: hour hand = hand value + central window value—a unique additive time-reading mechanism. The TB8213 features the TSAR BOMBA interchangeable system, allowing for quick replacement of the strap, bezel, and crown without tools. Grade A luminescent coating, scratch-resistant sapphire crystal, and an interchangeable fluororubber strap. Water-resistant to 100 meters (10 ATM).