Aluminum LED Reusable Penlight with Pupil Gauge- Blue are reusable and feature a pupil gauge for convenience, heavy duty aluminum casing, locking on/off push button, metal clip, and two replaceable AAA batteries! 

Features

• White LED bulb with standard 12000-15000MCD light intensity.
• Heavy duty aluminum casing.
• Locking On/Off push button.
• Includes 2 replaceable AAA batteries.
• Convenient printed pupil gauge.
• Metal clip.