This is the VIPER, a Uni-Vibe style effects pedal from T-REX. T-REX is a well-known Danish handmade effects manufacturer, similar to t.c. electronic and CARL MARTIN. The controls are DEPTH, SPEED, and LEVEL, and there's a rotary speaker/vibrato mode switch in the center. You can also fine-tune the sound character with an internal trimmer. The basic sound is based on the vibe sound of Jimi Hendrix. There are some scratches and dirt from use, but it works fine. Accessories include the box and printed materials. Feel free to ask if you have any questions!