U-boat has launched a new collection of watches in a 44mm size, following the success of the Darkmoon watch. Caran d´Ache Léman Slim Black Ebony Rollerball pen, Lacquer, Black, 4771.782. Caran d´Ache Léman Ebony Black Rollerball pen, Lacquer, PVD Gold, 4779.282.