LEFF Amsterdam Watch Tube S42 LT72101. For the design of the Tube watch we teamed up with Dutch Designer Piet Hein Eek. Piets unparalleled vision on design and LEFF amsterdams raw, industrial and sophisticated approach, came together in an amazing collection of refined yet tough watches. The design of the Tube watch has an iconic ring that functions as the clocks face. Therefore, you can recognize every LEFF amsterdam watch by this unique characteristic. The gray, steel watch case is made of stainless steel, contains an analogue movement and has a diameter of 42mm. The steel band is adjustable and has a butterfly buckle. This watch is also available in gold and black. The watch contains a Japanese Miyota movement and a glass plate made of Sapphire glass. The details in the crown are cut with a diamond. This Tube Watch has a water resistance of 10ATM.