The Boss DD-20 offers the longest delay of any effect pedal i.e. up to 23 seconds. Including classic tape delay and sound-on-sound recording, this Giga delay pedal comes with 11 delay modes. For subtle delay effects, the DD-20 pedal has smooth and twist modes. You can set delay time with this DD-20 pedal's push-button knob. Also, you can flawlessly change delay modes with the Boss DD-20's memory function. This Giga delay pedal comes with durable metal footswitch available in latching and unlatching types.