Seiko 5 Sports Field collection These watches have been created with an 'in the field’ military design – taking inspiration from a style originally called a ‘trench watch,’ created to be robust and reliable – echoing the Seiko 5 Sports characteristics. Seiko 5 Sports is known for over fifty years of reliability, durability, performance and value. ‘’5’’ represents the original five key features of every Seiko 5 still present today: Automatic movement, Day-date display, Water Resistance, Recessed crown and Durable case and bracelet. The five core features of the Seiko 5 Sport: The mechanism within the watch is 4R36 automatic movement which is built in-house and the calibre is comprised of 24 Jewels and a 41-hour power reserve. The placement of the crown is signature to the Seiko 5 Sport collection, positioned at 3 o'clock. Each Seiko 5 Sport displays a day and date window at the 3 o'clock position on the dial. The Seiko 5 Sports collection are known for significant water resistance up to 100 metres. The collection also comes with added durability of the case and strap of each model. Seiko's 5 Sport Field collection takes inspiration from historical military field watches. Individual Model Specifications SRPG31K1 Unlike many automatic watches, this model comes with a Seconds-Stop function which allows the wearer to completely halt the movement within the watch. The dial of this model is protected by Hardlex Crystal. It features a three-fold clasp for ultimate security on the wrist. The case of the watch is stainless steel. Securing the watch is a grey nylon strap. This model has a grey dial. The dial is easy to read with luminous Arabic hour-markers and hands.