Guitar Humidifier, Humidifier Hygrometer 2 in 1 Portable Easy To Install for Prevent Cracking Folk Classical Ukulele

【2-in-1 Design】2-in-1 guitar humidifier design with a precise indicating needle humidiometer, no battery. Real-time, humidification and testing are performed simultaneously. Safety, the humidifier eliminate potential problems such as warping, shrinking, worse yet, cracking. 【Instructions for Use】When the ambient humidity is below 40%, we can fill guitar humidifier’s 2 inlets with 5ml water respectively with a refillable bottle then clamp the guitar humidifier on the edge of the sound hole. Note: When the ambient humidity is above 70%, please don't use the guitar humidifier. 【ABS Plastic Material】This guitar humidifier is made of high quality ABS and plastic material, sturdy and long service life. Including gold detection hygrometer head and black ABS plastic humidifier. 【Compact & Portable】The guitar sound hole humidifier is very simple to use, easy to carry, no need to move the strings, it can be taken away in your pocket and you can take it anywhere. It is suitable for folk guitar, classical guitar, all acoustic guitars. 【100% Satisfaction】We always strive to provide our customers with the best service and products. Please feel to contact our professional after-sale service if you have any questions, we will give you the most satisfactory reply as soon as possible! Thanks for your understanding.