The vivid blue dial, orange "lightning bolt" seconds hand, and neon green glass, make this "Z-Blue" Milgauss ref. 116400GV the one to have. Housed inside its steel 40mm anti-magnetic case (resistant to 1000 'gauss') is Rolex's self-winding calibre 3131 movement. Waterproof to 100m. Fitted to its sporty Oysterlock bracelet, with summer/winter Easylink adjustment. Accompanied by its Rolex box, booklets, instruction manual, both swings tags & its UK stamped Rolex international warranty card dated Jan. 2016.