The electric coil print mechanism allows for simple one hand operation. Large, easy to read analog clock face, steel case and key lock. Two color black red ribbon self reverses at the end of the spool for longer life is easily changed. Recorders work with all standard time cards. LTH2126 uses manual activation and a spring loaded print mechanism for instant registration. Dimensions 10 1 4"Hx81 16"Wx55 32"D.