Features: Innovative 2-in-1 design with precise what indicates the needles humidiometer, environmental protection, no batteries Battery-freeReal-time, humidification and testing are performed simultaneously, tips: the humidity of the guitar cavity is recommended to be kept below 70%Safety, Humitar eliminates potential problems such as warping, shrinkage, even worse, cracking, silicone connection prevents damage to the guitarPortability, 80g easy to install and carry, no need to carry strings and can be taken in your pocketWhat you get: luxury low-key humidifier with connotationSpecifications:Size: 82*50mm Material: PlasticColor: BlackQuantity: 1pcNote:No retail package. Transition: 1cm=10mm=0.39 inch. Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 x Guitar Humidifier (Other accessories demo in the picture are not included.)