There is no cord that you could trip over, since the saw runs on a battery. The saw has a voltage of 18 volts and would surely make a good addition to your toolbox.
From Amazon
Sierra Circular V20 18V Ø165mm sin cargador/batería
Wickes
Stanley FatMax® V20 SFMCS500B-XJ 18V 165mm Cordless Circular Saw - Bare
Robert Dyas
Stanley FatMax V20 18V Circular Saw - Bare Machine