Search:

The name gives it away, it's a tracker. Use when you shoot something to find blood etc. it will be useless as a spotter

It's an expensive gimmick

600 probably means 300 in real life

A mate is selling one if you are interested, has extendable rechargeable battery pack and a couple of other extras $3250

???? That's 3x the price of the Leupold unit and is proven to be about the best bang for buck at the moment.

2nd paragraph, yeah... naaaa

https://www.leupold.com/resources/leupold-gold-ring-full-lifetime-guarantee/

Without even looking at the link, they will be a gimmick if they are that cheap