There is no latency that I have ever noticed while using it and battery life is decent, with the lighting off the mouse battery life improves greatly and I have been using it like that for a bit for the extra life, however it is very convenient to use the charging dock to charge with when Im not using it and the charging dock looks very nice when lit up. The one that comes is black and comes in two pieces to be assembled with a solid mount plate. What I love, Im hands free while I walk. Its cute and well-designed, why havent I found it earlier?! I?m a size 18 and they fit PERFECTLY! m so used to wearing thongs and 2)it makes it easier for my bunion to fit into shoes. My 3yr old daughter is between a size 9 and a size 10 so I got the size 10 because thats what I got her in sneakers and the sneakers fit great but these maryjanes fit huge. They have relieved my lower back pain more than I had hoped possible. Les tablettes ne s?aplatissent pas, malgré le poids des bottes et chaussures. At this price point, I would recommend these over competitors.