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 analyses reviews to verify trustworthiness.
The pen stopped working just after 7 days of use. The PLA filaments got stuck inside & got totally melted & jammed the nozzle. In spite of getting the filaments out, cleaning the nozzle, the pen was not able to function. DO NOT BUY AT ANY COST. IT'S A WORTHLESS PRODUCT. Better to go for the expensive branded pens.