Mini round digital humidity thermometer allows you to easily know the environment temperature and humidity around you<br> Fahrenheit (F) or Celsius (C) conversion, this round thermometer displays temperature in Fahrenheit or Celsius (pressing the conversion button of /)<br> Measurable humidity range: 10%-99%, humidity measurement accuracy: 5%-10% (room temperature 25). Reliability, measured every 10 seconds, provides the latest and accurate measurement results.<br> Household humidity and temperature monitor: This portable thermometer measures indoor humidity and temperature, which helps you to understand indoor air conditions. Become an Perfect choice for personal and professional life.<br> Battery: LR44 button cell<br> Colour:black<br> Material:ABS<br> Size:about 45 x 45 x 14mm<br> Package Contents:<br> 10 x Digital Thermometers<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.