Features: brand new and high quality Exquisite Appearance: With an alloy frame and flush mounting, the hygrometer is not only very durable, but also exquisite in workmanship and exquisite in appearance. Function: Mainly used for humidity measurement of violin, guitar and other musical instruments, humidor, etc. Measuring range: Measuring humidity in the range of 20~. GOOD ACCESSORIES: The hygrometer is small and portable, can be placed in a violin or guitar for case, requires no batteries, physically sense the air humidity, and can clearly display the current humidity . Great for storage and maintenance of valuable musical instruments. GREAT GIFT: This hygrometer is a practical gadget for instrument lovers, and those who receive this gift will be very happy. Specifications: Material:Alloy+Acrylic Size:Approx.4.3x1cm/1.7x0.4in Package Includes: 1x Hygrometer note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.