Material:ABS Battery Operation: Require 2 x AAA 1.5V battery (not include) included) Temperature range:-10~88°℃ Humidity range:10%RH~90%RH Package list: 1*humidity and temperature monitor Descriptions: －－Multifunction:Includes time, date, year, alarm clock displaying, indoor humidity and temperature displaying. －－Easy reading:Large display screen with large numbers tells you the accurate real time temperature and humidity of your surrounding. －－Material:Constructed of high quality ABS material,which is durable, impact resistant. －－Application:Widely used in your office, living room,kitchen, baby room and more. Notes: 1.Please allowed 1-3mm differences due to manual measurement, thank you! 2. Due to the difference between different monitors, please understand that the picture may not reflect the actual color of the item.