TANITA Alarm Clock with Temperature and Humidity Dark Thermo-Hygrometer Sensor, Gray, TC-421-DG

Size: Approx. 111mm W x 24mm D x 91mm H (excluding magnetic holder), Weight: Approx. 137g (including batteries, excluding magnetic holder) Set contents and accessories: Main unit, magnetic holder, trial batteries (2 AAA batteries (R03)), instruction manual (with warranty card) Power supply: Two AAA batteries (R03); Battery life: Approximately one year (when using the alarm once a day) Measurement range: Temperature: -5.0 to 50.0 degrees ("Lo" when below -5.0 degrees, "Hi" when above 50.0 degrees), Humidity: 20 to 95% ("Lo" when below 20%, "Hi" when above 95%) Measurement accuracy: Temperature: 0.0 to 40°C +-1.0°C, Other: +-2.0°C, Humidity: 35 to 75% +-5%, Other: +-10%