The Oasis OH-1 Guitar Humidifier provides the perfect solution to guitarists who want a well-humidified instrument but are terrified by the possibility of a spill through a unique syringe-like design and stabilizer bar sitting over the sound hole. Maintaining a constant 45-55% humidity the year throughout regardless of season or elevation, the OH-1 simply crinkles up to give you a visual cue when the humidifier needs more water to keep your instrument in pristine condition.