Sinn Spezialuhren EZM 7

The Sinn EZM 7, reference 857.030, is a GMT watch in a bead-blasted steel case 43 mm across and 12 mm thick, water resistant to 200 metres. The crown sits on the left of the case and screws down. Colour coding marks the captive rotating bezel, which ratchets in minute steps in one direction. Through sapphire crystal, the matte black dial shows central seconds and a date beside luminous indices. Calibre SW330-1 winds automatically. Magnetic Field Protection shields the movement against magnetic interference.