The stringent aesthetic of the modernist KOPPEL Wall Clock is a stylistic refinement of the KOPPEL Melamine Clock, the very first clock designed by Henning Koppel back in 1960. Its hands extend beyond the centre, where circles marking hours and minutes replace the more traditional Roman numerals. This is a Georg Jensen clock with precision quartz movement. The clock uses AA batteries, and one battery is included with purchase. The precision of the clock is +/- 1 second per day or 15 seconds per month. Besides the quartz movement, the KOPPEL Wall Clock also has a Sweep Movement, which is a continuous movement of the second hand. The KOPPEL Wall Clock is made out of stainless steel and ABS plastic, and it has a diameter of 30 cm.