URWERK UR-103T: TECHNICAL SPECIFICATIONS Case in:18k white or red gold. Dimensions: 50mm x 36mm x 13.5mm (including lugs) Movement: Calibre 3.04 manual winding; 21,600bph/3Hz; Power reserve 36 hours; Triple bridges in black ARCAP P40; Time indication by sapphire hour satellites rotated by Geneva crosses Control Board: Grade 5 titanium, power reserve indicator, 15-minute and seconds dials for precise time-setting, user adjustable fine-tuning screw