Quartet VMP-1100 Laser Pointer Pen-Sized, Professional Look, Red Class 3a Laser, Battery-Operated, 1500' Operating Range A/V PRESENTATION-Wireless/Laser Presenters
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.