Longines Watch Spirit Pioneer Edition L3.829.1.53.2. The case back is engraved with the words “PIONEER EDITION”. Longines adds to its Longines Spirit collection a new Grade 5 titanium chronograph, intended for the brand’s most popular outlets. The lightweight piece is presented on a black synthetic strap with neon green stitching that matches the matt black dial’s hands and Arabic numerals, which are coated in Super-LumiNova for optimal visibility. The 42.00 mm titanium case houses an exclusive COSC certified automatic movement (L688.4) with a silicon balance spring.