The color is random (green, black, red, yellow, purple, blue, silver, etc.)

A large box of 600 pieces, no specified color

Battery purchase: https://detail.1688.com/offer/43036424232.html

Name:

Mini laser and flashlight dual-purpose pen

Bulb: 2 LED lights, plus a laser

Specification length: Approximately 7cm

Light emission type: white light + laser + banknote verification

Power supply method: ag13 button battery

Seven colors: red, black, green, blue, yellow and silver

【 Name 】 : Infrared Laser Teaching Lamp/Ultraviolet Banknote Detector Lamp /LED Small Flashlight Three-in-one

Features: Two switches, three different types of lights. The red laser light teacher pen that you want to play with is a super practical banknote detector that will no longer make you feel embarrassed about counterfeit money!
There's also a small daylight flashlight, which is very practical! This product already includes three batteries and an aluminum buckle. You can use it immediately after purchase

Function: Infrared laser for direction guidance, LED white light illumination can be used as a flashlight, ultraviolet light for banknote detection to prevent counterfeits, with two button switches and three AG13 electronic components. The front side can reflect the clear fluorescence of the RMB, and the golden thread on the back side can also reflect the glow. Counterfeit banknotes have no watermark or the watermark is blurry, and the lines on the back side do not glow. It is a great helper for everyone to distinguish genuine from fake RMB. It is small in size, easy to carry and practical. It is an electronic product that you always have in your daily life! Spend a small amount of money to reduce the loss of receiving counterfeit money!