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Black metal laser pointer pen with star-pattern cap, 18650 battery and charger

Corn Electronics

Corn Electronics 303 Green Laser Pointer 532 nm 4200 mAh 18650 Battery Charger

SKU CH-E54A-DF45H

Green 532 nm laser pointer with adjustable focus, five star-pattern caps, safety key lock and a 4200 mAh 18650 battery plus charger included

  • Product typeProject & Display Boards
  • Product colorBlack
  • Green 532 nm beam suits presentations and teaching
  • Adjustable focus lets you sharpen or widen the spot
  • Aerometal body provides durable everyday handling
  • Includes 4200 mAh 18650 battery and charger for immediate use
  • Safety key lock prevents accidental activation

Presentation Laser Pointer

The Corn Electronics 303 emits a green beam at 532 nm for presentations, teaching or general pointing tasks. It is powered by a supplied 4200 mAh 18650 rechargeable battery and charger. An adjustable focal length lets the user change the spot size, while a key lock prevents accidental activation. The body is made from aerometal and measures 25 mm by 155 mm.

Suitable Users and Limits

This pointer suits speakers, teachers or hobbyists who need a visible green beam with a focus adjustment and a safety key. It is not for buyers who need a different wavelength, a higher output class or a device rated for rugged outdoor environments. The kit includes five star-pattern caps for visual effects, but it does not suit users who require a simple dot beam without pattern accessories.

Deciding Specification

The 532 nm wavelength fixes the beam colour as bright green, which determines visibility in typical indoor lighting and compatibility with standard projection screens. This single figure decides whether the pointer matches the user’s application.

How it compares

Measured against everything we stock in Bulletin & Magnetic Boards, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 91% of the 324 comparable items (median $73.99).

Specifications

Product
Product typeProject & Display Boards
Product colorBlack

Questions about this item

How much power does the 303 green laser pointer draw when running continuously at 532 nm?

It operates at 3.7 V DC from a single 18650 cell, so the current draw is low enough for extended use without overheating the aerometal body.

What must I already own to power the laser pointer out of the box?

The package includes one 4200 mAh 18650 battery and its charger, so no separate cells or power supply are required.

Will the adjustable focus and star cap work with older presentation remotes or tripods I still use?

The pointer is a standalone 25 mm by 155 mm pen-style device with a key safety lock; it has no mounting threads or wireless receivers, so it cannot attach to legacy remotes or tripods.

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