What is the crowd's opinion of HiLetgo 10pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm?

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HiLetgo 10pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm https://www.amazon.com/dp/B071FT9HSV/ref=cm_sw_r_cp_api_glt_fabc_MZ1840AZBJYW11YJH4RD

Ideally I would like them to last as long as possible while staying as light as possible.

Thank you for the reply!! Anything you can drum up would be awesome!

I am a total rookie so my apologies.

Here is the link copied from Amazon

HiLetgo 10pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm https://www.amazon.com/dp/B071FT9HSV/ref=cm_sw_r_cp_api_glt_fabc_MZ1840AZBJYW11YJH4RD

Any help or ideas would be appreciated.

How does the inside look like? These usually have a small board holding the few electronics. Maybe 1cm x 0.5cm or so. You could pull that easily and the diode will come with it, but unfortunately the collimator is really tough to get out of there as it's usually made with the tube, or at least that's what 4 of mine are like. I've been lucky with a few in the past where simply pulling the electronics brought the collimator, but those are the kind you can't focus, and it seems like yours is not fixed.

Lasers are very cheap nowadays, wouldn't it be easier finding a diy one on Amazon?

Here you have 10 lasers for $5.49 https://www.amazon.com/dp/B071FT9HSV/ref=cm_sw_r_em_apa_i_Bm3QEbKRVVG9A

one of these cute lil guys

https://www.amazon.com/gp/product/B071FT9HSV/ref=ppx\_yo\_dt\_b\_search\_asin\_image?ie=UTF8&psc=1

https://www.amazon.com/HiLetgo-10pcs-650nm-Diode-Laser/dp/B071FT9HSV/ref=sr_1_4?crid=5AVO02YVZNN4&keywords=red+laser+diode&qid=1647551603&sprefix=red+laser+diode%2Caps%2C347&sr=8-4 here

The first board was given to us by a psychologist and the second one is homemade by my sister. Let me know if you need them, I can send you a pdf so you can print it out.

I made the laser myself. We bought some lasers like these and I welded it to a usb cable for phone. I plug the laser either to a power bank or to a charger like this.

We used to use laser toys before, but we often had to change the batteries. You can use this kind of laser if you can't build one.

Let me know if you have a question