 The Sovereign came in satin chrome and gold @-@ plated models , with leather pouches and fitted wooden cases . It had an 8 @-@ digit seven @-@ segment display that used red light @-@ emitting diodes , with a decimal point to the right of each digit that could be illuminated as necessary . Power was provided by two 1 @.@ 35 mercury button cells . The Sovereign measured 36 by 141 by 12 millimetres ( 1 @.@ 42 in × 5 @.@ 55 in × 0 @.@ 47 in ) , which made it small and sleek compared to other calculators of the time . 
 The Sovereign came in satin chrome and gold @-@ plated models , with leather pouches and <a href='uninflect' title='1'><mark>fitted</mark></a> wooden cases . It had an 8 @-@ digit seven @-@ segment display <a href='null_relcl' title='2'><mark>that</mark></a>used red light @-@ emitting diodes , with a decimal point to the right of each digit <a href='null_relcl' title='3'><mark>that</mark></a>could be illuminated as necessary . Power was provided by two 1 @.@ 35 mercury button cells . The Sovereign<a href='been_done' title='4'><mark></mark></a> measured 36 by 141 by 12 millimetres ( 1 @.@ 42 in × 5 @.@ 55 in × 0 @.@ 47 in ) , which made it small and sleek compared to other calculators of the time . 
The Sovereign came in satin chrome and gold @-@ plated models , with leather pouches and fit wooden cases . It had an 8 @-@ digit seven @-@ segment display used red light @-@ emitting diodes , with a decimal point to the rite of each digit could be illuminated as necessary . Power was provided by 2 1 @.@ 35 mercury button cells . The Sovereign done measured 36 by 141 by 12 millimetres ( 1 @.@ 42 in × 5 @.@ 55 in × 0 @.@ 47 in ) , which made it small and sleek compared to other calculators of the time .