VERTECHnk SKY-80 Guitar Sound Hole Digital Hygrometer & Humidifier System Soundhole Cover Dia.80mm for EQ Acoustic Classic Guitars

Features:
Compatible with 80mm Guitar Sound Hole: Multi-functional digital sound hole humidity controller designed for EQ folk guitars with sound hole of 80mm.
Guitar Humidifier Function: Moisten the sponge in humidifier silicon case by water, and install the silicon case to the cover to increase the humidity of your guitar.
Guitar Dehumidifier Function: Put the silica gel pack into the small pouch, and fix the pouch to the cover to absorb moisture around your guitar.
Digital Hygrometer Thermometer Function: The sound hole cover is designed with a sensor to monitor the temperature and humidity for outside guitar, and with LCD display showing the accurate temperature and humidity information for you, very convenient to use.
Normal Sound Hole Cover Function: Can be used as a normal guitar sound hole cover to eliminate unwanted feedback and enhance stage volume. Quick and easy to install remove, and soft rubber covers the installation edge and ensures no damage to your guitar.