V845 model wah pedal, compatible with 9V battery. - Model: V845 - Type: Wah pedal - Power: 9V battery or AC adapter - Country of manufacture: China - Connections: Instrument jack Thank you for viewing. I purchased this on Mercari last fall, but I have never used it, so I am selling it. I have confirmed that it works. Please note that this listing is for the pedal itself only.