Oasis HH Combo OH-30 Humidifier / Hygrometer
- Soundhole humidifier with convenient user-adjustable hygrometer
- Fits easily in the soundhole of your steel-string acoustic guitar
- Humidifier releases moisture evenly and slowly
- Hygrometer takes all the guesswork out of adjusting humidity levels
- Drip-resistant polyvinyl acetate sponge holds 10 times its dry weight in water and maintains humidity for 15 days or more before needing to be recharged
- Features 4 openings for water vapor to escape, with 4 additional openings that can be punched out for more humidity in dry climates
- Sponge is easily recharged by moistening it with distilled water