How do I get the grid display to be the single beam of light? When I take the end off entirely the beam is not focused. It projects a softball sized ball of light on to objects instead of a fine point.

Unfortunately you can not get it to a single beam with out taking the light refracting lens off. Its a rather strong laser pointer so it won't be that small of a beam.

Do i need eye protection to toy around with this?

No. As long as a laser is 5mw or below you do not. But never point it into someone's eyes.

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Main image of LED 303 Laser Pointers Green Beam Laser Pointer Star Pattern Filter pen Adjustable Focal Length Safe Key Laser+4200mah 18650 Battery+Charger

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LED 303 Laser Pointers Green Beam Laser Pointer Star Pattern Filter pen Adjustable Focal Length Safe Key Laser+4200mah 18650 Battery+Charger

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Color:Green
This laser pointer can be used for presentation, teaching indicator, children amusement and more.
Power supply: 1 x 18650 Battery
Focus mode: adjustable
Body material: aerometal.

Overview

Specs

Reviews (4)

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Specifications:
1.
Wavelength: 532nm.
2. High Power Military Grade
3.
Beam style: continuous line.
4.
Preheat time: < 3seconds.
5.
Operating Voltage: DC 3.7V with a key to protect
6.
Dimensions:? 25mmX155mm
7.
Battery: 18650 can rechargeable batteries (Not included)
Package include: 1 X 303 Green Laser pointer pen with 5 star Capter 2 x Safety Keys 1 x 18650 battery 1 x charger
Cautions: Avoid direct eye exposure to laser beam NOTE!!! Never point it to eyes!!! Always Keep it away from children!!!

Best Seller Ranking	#7 in Presentation Equipment & Supplies

Specification
Type	Project & Display Boards

Details
Color	Black

Additional Information
First Listed on Newegg	February 11, 2019

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies

Return for refund within: 30 days
Return for replacement within: 90 days
This item is covered by Corn Electronics Return Policy

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Item#: 9SIA4RE4TF1222