Three AAA batteries are required, (not included) which are installed inside the handle of the umbrella. High-Quality LED Light-Up Blade-Runner Style Transparent Umbrella with Flashlight and 7 Colors.
Great idea, not sure how the pen would detect the 2 laser beams have crossed each other or the dots are in the same place on the wall, but would love this for the pens I have. Recommend these btw
This clear, color-changing lightsaber umbrella is so cool.
https://www.ebay.com/itm/201461669119
Every Star Wars fan should get this umbrella.
You can buy one at Amazon!
These look almost like they would work!
Great idea, not sure how the pen would detect the 2 laser beams have crossed each other or the dots are in the same place on the wall, but would love this for the pens I have. Recommend these btw