The Tsar Bomba Customize Watch Kits put the design decisions in your hands. Choose your case, choose your strap, choose your combination — and build the exact watch you have been imagining. Each kit includes multiple interchangeable components, an NH35A or quartz movement at the core, and the Tsar Bomba standard of sapphire crystal and 100M water resistance throughout.From ceramic and carbon fiber to rubber and stainless steel, the Customize Watch Kits let you create a timepiece that is genuinely yours. No two builds are exactly alike. Explore the kits, choose your combination, and start wearing the watch you designed.