Oasis OH-1 Guitar Humidifier

The Oasis OH-1 is a soundhole humidifier for acoustic guitars. It is designed to maintain roughly 45 to 55 percent relative humidity inside the guitar body when the surrounding humidity is between 25 and 40 percent, provided the instrument is already hydrated. The unit includes a stabilizer bar for mounting across the soundhole and a syringe for filling it with distilled water.