Every product page on 9spaceX starts with a research file. We read the brand's own product page first, then independent reviews, and we only publish a number we can point to.
When sources disagree, we say so
Lofree lists the Flow84 at 594 g. ThinkComputers lists 568 g. We show the brand figure on the product page and keep the difference in our notes rather than picking the nicer number.
Brand claims stay labeled
Battery life is a good example. Lofree's up-to-40-hours figure for the Flow84 is the brand's own number, so we call it that instead of presenting it as a test result.
Reviews include the downsides
We read the critical parts too. Trusted Reviews lists no software and no 2.4GHz option for the Flow84, How-To Geek reports VIA setup trouble on macOS for the Air75 V2, and Windows Central's review headline calls the 8BitDo Retro 87 loud. These go into our FAQ answers so you know before you buy.