Hi you are looking at a brand new complete with batteries Reptile Vivarium Digital Thermometer, these are much better than a traditional thermometer and very accurate and easy to read

Features:

• LCD screen, easy reading , easy to install
• With long sensor cable
• Compact design for discrete use 
• Temperature Range: -50°C ~ +70°C
• Usage Temperature: -10°C ~ +50°C
• LCD Size: 25mm X 12mm
• Power: DC 1.5V LR44 button battery (included)
• Switch of °C / °F
• Accuracy: ±1°C
• Cable Length: 1m
• Comes complete with batteries