Description Are you looking for a professional, yet affordable hygroscope? these are hygroscopes, made of ABS material. Humidity display resolution is up to 1%, it can clearly display temperature and humidity. They are one of the best choices for you. Features - Material: ABS.- Size: About 4.50X2.50X1.50cm/1.77X0.98X0.59inch.- Made of ABS material, you can use them for a long time.- Large-character display, clear to read.- Low power consumption and high stability and accuracy.- It can clearly display temperature and humidity.- Their surface is smooth, you will have the good skin feeling. Specification - Humidity measurement range 20%90%.- Humidity display resolution 1%.- The humidity sampling cycle is 10 seconds (1 minute).- Humidity measurement accuracy 5%.- Rated voltage DC1.5v (2 AG13 button batteries).- Temperature measurement range -50 to 70.- Temperature measurement accuracy 1 (under normal temperature).Packing list: 5 x Hygrothermograph