Led Penlight With Pupil Gauge And Ruler Detector Torch Tactical Flashlight Medical Pen Lights For Nurses Doctors Design: Top with push button on/off switches, easy to control, Convenient: metal pocket clip, lightweight and portable, fits easily in your pocket, Professional and efficient: The penlight with pupil gauge and ruler board on both sides of the pen light is very useful for measuring height of the pupil and the patient's body, Light Color: White Batteries: Two AAA dry batteries (not included in the product) Colour: Black Size: About 137mm in length Delivery quantity: 5 pieces Warm prompt: 1. As different measuring methods, it will occur 1-3 cm deviation about the items, please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products. Products from BAZHOU's store