This thermometer is Internal and external temperature measurement, clock display function, ultra-thin shell. They are made from top-class material with strong durability. Corrosion resistance will highly performance in working. Features - Color: black. - Material: Plastic. - Size: 7.5x3x1.7cm - Temperature range: -50 degree centigrade to +70 degree centigrade; - Resolution: >-20 degree centigrade is 0.1 degree centigrade - In pieces - 20 degree centigrade or less is 1.0 degree centigrade - Power source: 1.5v (LR44) - Precision: ±1 degree centigrade - Made of material for durable use. - It is suitable for the temperature measurement of aquatic reptiles, indoor and outdoor, air conditioner, refrigerator and vehicle. - Internal and external temperature measurement, clock display function, ultra-thin shell . - Self-adhesive, easy to install, no need to drill. - A great your friend and family. Package list: 1 Thermometer clock