• Material: penlights are made of premium aluminum alloy body and high quality led bulb
• Design: Top with push button on/off switches, easy to control
• Convenient: Metal pocket clip, lightweight and portable, easily fits in your pocket
• Compact & Portable: This penlight is 5.3 inches long, powered by 2 pieces AAA batteries(not included)
• Professional & Efficiently: Penlight with pupil gauge and ruler chart on both side of pen light are very useful for your measure the pupil size and bodies of patient's