Type:Digital Thermometer Hygrometer Material:ABS Screen:LCD display External dimension:1.89x1.13x0.6in (48x28.6x15.2mm) LCD size:1.4x0.66in (35.7x16.8mm) Weight:1.2oz (35g) (2 button cells included) Humidity measurement range:10%-99% Humidity measurement accuracy:+/-5% Humidity sampling period:10 seconds Rated voltage:DC 1.5V (2 LR44 button cells) Temperature measurement range:-50-70 Temperature measurement accuracy:+/-1 Celsius Degree (under normal temperature) Function:display temperature and humidity Application:temperature/humidity measurement