Large, silent countdown clock with mirrored dial ... The silent, backwards running clock with mirrored dial shows exactly how many minutes remain. The time can be set with an easy-to-grip rotary knob and runs down clockwise. The coloured area conveys the time information at a glance without distracting the students from their task. The sound signal for the passing of time can be set loud, soft or silent and in 8 different lengths. With fold-out feet, wall hanging hole and magnet on the back for attaching to the blackboard. 2 x AA battery required and incl. Material: synthetic material, metal Measurements: 20 x 20 x 4 cm
