Greetings from the Tweed Hut Music Store in Vacaville, CA. USA! Established in 2002, we do a great job and won't let you down! 
This pedal is in great shape and works perfectly!

Manufacture's description:

Easily Tweakable Green Overdrive

The Way Huge Green Rhino MkIV overdrive pedal exudes the amp-like grit that is a must for any player, and it does it in a very tweakable package. All of the iconic Green Rhino tones that have made the pedal such a favorite can be accessed with the Classic switch. Or you can utilize the 100Hz and 500Hz controls for fine-tuning your sound. With the Green Rhino MkIV, you'll be able to punch the front of your amp and increase your sustain without any low-end loss.

Way Huge Green Rhino MkIV Overdrive Pedal Features:

• Overdrive pedal with wide-ranging EQ control
• Fine-tune your tone with active EQ at 100Hz and 500Hz
• Volume, tone, and gain controls offer standard control
• Classic mode sounds just like the original design
• Pedalboard-friendly size

The Way Huge Green Rhino MkIV packs a lot of power into a small footprint.
Tech Specs

• Pedal Type:Overdrive
• Inputs:1 x 1/4"
• Outputs:1 x 1/4"
• Power Source:9V DC power supply required
• Batteries:Optional 1 x 9V
• Height:1.75"
• Width:3.18"
• Depth:4.78"
• Weight:13 oz.
• Manufacturer Part Number:WHE207