The Electro-Harmonix Nano Pulsar delivers ear-grabbing tremolo effects, along with a mind-bending panning experience via the stompbox's stereo outputs. This space-saving guitar pedal includes a Triangle/Square Wave mode switch, along with Shape and Modulation Rate controls for a wide range of immersive pulsating effects. You also get a status LED/synchronization indicator for at-a-glance confirmation of your settings. The Nano Pulsar is housed in a rugged, pedalboard-friendly metal enclosure and operates via a 9-volt battery or power supply. If you've been searching for a compact tremolo pedal that's packed with effects, you can't go wrong with the EHX Nano Pulsar.