General Feature 1. Forehead and object measurement 2. One second responding time 3. °C/°F conversion 4. 3cm reading distance 5. Auto power-off 6. 30 memories 7. Large LCD display 8. 3-color LED backlight (optional) 9. Fever alarm 10. Bluetooth (optional) 11.Ingress protecting rating:IP22 Battery: 2*AA battery