Pen-size IR. One end of this attractive metal pen features a super bright white LED. A standard AAA provides 6 hours of continuous illumination. The other end contains a non-contact Infrared thermometer. Press the button to scan temperature and release to hold. The IR thermometer has a response time of 1 second and is protected by a lens cap when not in use. Two button-cell batteries provide 35 hours of continuous temperature measurement. All batteries are included (one AAA and two LR44 button-cell) and the backlit LCD display will inform you when they need to be changed. Comes in a sturdy foam lined metal case.