Citizen Watch Promaster Diver BN1024-01Z. Maintaining the robust standards of the Promaster collection comes the latest Promaster Diver, offering a unique take on professional-grade performance and style. The robust 46mm silver-tone stainless steel exterior ensures up to 300 metres of water resistance, making use of a 4 o'clock screw-down crown placement and an easy-grip bezel. Hidden lugs connect to a strap made from BENEBiOL PU, which includes plant-based materials, securing the timepiece to the wrist. The highly legible dial is brought to life through a deep, gradient red, with a pair of prominent hands and a subtle date at the 4 o'clock position. Sustainably powered by light C any light C using Citizen Eco-Drive technology that never needs a battery.