Features MEASURING METER: The digital display meter can be used to measure indoor and outdoor temperature and humidity, with convenient reading. REAL TIME DATA: Provide accurate temperature and humidity data in real time to perceive the environment and improve air comfort. HIGH ACCURACY: The thermometer and hygrometer have high accuracy and wide measuring range, with strong practicability. ABS SHELL: The shell is made of excellent ABS plastic, with high hardness and wear resistance, and can be used in outdoor. BUILT IN BATTERY: Built in a 3V 210mAh button battery, easy to use, no need to worry about power supply trouble. Specification: Item Type: Temperature Humidity Meter Temperature Measurement Range: -10-70℃ Temperature Measurement Accuracy: ±1℃ Temperature Resolution: 0.1℃ Humidity Measurement Range: 20%RH-90%RH Humidity Measurement Accuracy: ±5%RH Humidity Resolution: 1% Battery: 1 x 3V 210mAh lithium manganese button battery (built in battery) Size: Approx. 80 x 48 x 9mm / 3.1 x 1.9 x 0.4in Package List:1 x Temperature Humidity Meter 1 x Accessory1 x Sticker Package List 1 x Temperature Humidity Meter 1 x Accessory 1 x Sticker