A staple of nurse's supplies! This LED penlight is a must-have for nurses! For medical use, there is a pupil gauge scale on the side. The eye-friendly yellow light is also ideal for pupil measurement! Rubber type fits in your hand and is non-slip! The switch is also a durable type and can be used for a long time! The clean tip, switch, and clip are silver♪ The size is also compact! It's very convenient to carry around during rounds! ★No comment, immediate purchase is welcome★ ■Size Length: Approximately 14cm Weight: Approximately 17g Pupil gauge: 2-9mm Scale: 0-5cm ■AAA batteries x 2 (Batteries are included) ◆To keep the price down, we will ship via regular mail. Also, there is no tracking function. We would appreciate your understanding.