Description: The humidifier is designed to protect your guitar in dry conditions. Add 10ml of water and slowly put it inside the guitar to keep the moisture content right. Easily eliminate worries and wood cracks (black) to protect your guitar from the effects of dry weather and destroy your guitar. Non-removable design - Place water droplets into the top hole or soak in water for ease of use. The guitar humidifier is suspended from the strings and never touches the guitar body. The drip-free design is even and provides moisture slowly. Easy to use, you only need to fill out once a month to get the perfect guitar humidity and guitar sound. Specifications: Name: Guitar Sound Hole Humidifier Color: silver, gray Package Included: 1*guitar sound hole humidifier