This Boss SY-1 Synthesizer is in Excellent condition. No dings or wear to speak of, looks like velcro was previously attached and removed (took pedals original rear label with it). Good working order with no issues to note, includes the original box and retail inserts, no other accessories included.
from Boss' website

With the SY-1, it’s never been easier to infuse your creative arsenal with BOSS’s legendary guitar synth technology. This amazingly expressive tool is filled with 121 ultra-responsive sounds, all distilled down into a BOSS compact pedal that slides easily into any setup. Best of all, it’s as simple to use as a standard stompbox, so you don’t need any background in synth programming to bring a new world of sonic textures to your music.

Features:

Authentic BOSS polyphonic guitar synth in a compact pedal
No special pickup required—play rich, dynamic synth tones with any guitar or bass
121 total sounds (11 types and 11 variations), all ready to play with no programming knowledge needed
Includes a wide variety of analog-style synth sounds, from leads, basses, and layered organs to sweeping pads and arpeggiated sequences
Latency-free performance for unrestricted musical expression
Quickly adjust sounds to taste with Tone/Rate and Depth controls
Hold function for playing normal guitar over sustained synth voices
Blend synth and normal guitar sounds with independent level controls
Parallel send/return loop for easy integration with other pedals on your board
Mode switch optimizes the synth engine for guitar or bass
Supports extended control with an external footswitch or expression pedal