This unit's unique sci-fi design, characteristic of the company, is striking. Although it has only one wah type, it allows for frequency band adjustments and balancing the wah sound with the original signal, making it extremely user-friendly. Furthermore, a key feature is its ability to function as a wah-to-bypass or a wah-to-volume pedal. The pedal uses a sensor, and it can be powered by a 9V battery or an AC adapter. Operation has been confirmed, and there are no issues. Roger Mayer Vision Wah Handbuilt in UK – Boutique Guitar Effects Pedal Used RM_VISIONWAH_0213