Bests & Worsts Reviews from Amazon

I really do like this product, but having had it for about two months, there are two issues that preclude me giving it five stars 1) I'm a little disappointed with the battery life. Perhaps I had too high expectations, I thought I had read somewhere that the a charge should last "months," I was expecting to charge it only 4-5 times per year, but I can't find any reference to that, so maybe I made it up in my head. Still, I've had it two months and at least twice I was surprised by the battery being dead. It would be nice if there was some sort of warning, perhaps chirping every few hours or flashing the light, to let you know the battery was about to expire. Obviously if the battery goes dead when the keys are lost, this can be a potentially huge problem. I won't really count this, though, because I'm not sure how long it lasts, and I suppose now that I know, charging every few weeks is no big deal. Still, I wish there was some sort of warning. 2) The plastic on the battery cover is an entirely different and softer plastic than the rest of the unit, which causes it to yellow quickly. As noted, I've had it only two months, and the cover is already a sickly shade that stands out badly compared to the rest of the unit.