This is a new waterproof digital thermometer with a display. It is suitable for greenhouse, fish tank, swimming pool and other application scenarios which require temperature measurement. It\’s completely waterproof to a depth of one meter for a long time and can continuously work for half the year with only 2 AG13 button cells (not included). Applications Vehicle temperature measurement Indoor temperature measurement Fridge temperature measurement Body temperature measurement Fish Tank/ Swimming Pool temperature measurement Specification Temperature Measurement Range: – 50 ~ 110 Temperature Measurement Error: 1 Resolution: 0.1 Refresh Rate: 1.5 ~ 2 seconds Operating Voltage: 2x AG13 button cells Operating current: 4 uA (Max) Probe Cable Length: 1 m probe length: 20 mm (1 meters waterproof probe) Operating Temperature: 0 ~ 50 Storage temperature: – 10 ~ 60 Dimension: 4.8 * 2.8 * 1.5 cm/ 1.89 * 1.1 * 0.59 inches Weight: 28g Shipping List Digital Thermometer x1 Batteries not included