Description: l This thermometer and hygrometer is a practical gadget for instrument lovers. l It is compact and portable to place at the violin or guitar case, no battery needed l It shows the current humidity and temperature clearly. l Greatly beneficial to the storage and care of your precious instrument Feature: l Adopted alloy frame, the thermometer and hygrometer is not only very durable but also has exquisite workmanship and delicate appearance. l Round shape, compact and portable, it won't occupy too much space. l Measure the humidity at the range of 20~100%, displaying at ℃, measure the temperature at the range of -25~55℃ / -13~130℉, displaying at ℉ l It is used to measure temperature and humidity in musical instrument boxes such as guitars, violins, etc. Specification: l Material: Alloy l Color: Gold, Silver (Optional) l Humidity Range: 20~100% RH l Temperature Range: -25~55° / -13~130° l Outer Diameter: approx. 4.3cm / 1.7inch l Weight: About 23g l Application: for Violin Guitar Instrument Case Etc Package Included: l 1 x Instrument Thermometer Hygrometer