For the design of the Tube watch we teamed up with the prolific Dutch Designer Piet Hein Eek. Piet's unparalleled vision on design and LEFF amsterdam's raw, industrial and sophisticated approach came together in an amazing collection of refined yet robust watches. The design of the Tube watch is truly unique and instantly recognizable: to achieve the high level of detail, we use a special cutting method to make the teeth for the dial, creating the iconic LEFF amsterdam watch face. The D-series is the functional yet statement design piece by LEFF amsterdam. The style of the D-series is one that we guarantee you will not be able to find elsewhere. The strap for the D-series appears to run straight through the iconic watch dial, and has a slightly thicker case available in either Brass, Steel or Black, in both a 38mm and 42mm diameter sizes. Pair with either the classic, high-quality leather strap in Black or Brown, or the impressive textured Cordura strap known for its durability and resistance to abrasions, tears and scuffs.