Look, I'm 78 years of age. What do I know about "2.4 GHz -3 Adjustable DPI Levels: 2000/1500/1000dPi"? Double-Dutch to me. I bought it anyway. It worked straight away. I can just ignore the techie stuff. So can you.
The late Pope's Rosary is in Latin. I should have read other buyers' reviews first and I would have been forewarned! Object lesson: read other folks' crits. before buying. Still, it was as cheap as chips.
Wouldn't be without it. Lovely in the shower - just bunch it up, add liquid shower wash, fluff it up, go. Skin feels good afterwards. Dries overnight after use. Will last for yonks. Downside: would prefer if it had a handgrip at each end so it would stay flat when washing my back. At present no handgrips so turns into a thick rope. Also limited choice of colours.