The Detroit Auto is a unique, oversized watch for the bold customer. The 48mm marine-grade solid stainless steel case is plated with midnight black car bide. The watch movement is created by a 21-jewel Japanese automatic movement with a 48 hour power reserve. The watch operates without a battery, instead needing constant movement to operate. The 22mm watch band is made from marine-grade stainless steel and has a micro-adjust double-locking clasp that allows for precision adjustment for the customer. The watch is 100m waterproof.