Im moving away from this mechanical key hype and I am not disappointed in the least. If they run out on my way to work I just plug them in to the computer for a bit when I get to work and they?re done before lunch or I put them on charge when I get home and they are done before bed. The only reason I didnt give it a 5-star is the slightly cheap feel to the metal in general and specifically the screw that gets undone rather easily - they should have chosen a superior quality for that part, as the weight of the microphone easily pushes itself into the horizontal. Would like to exchange them for a size that fits Not the quality I would expect from this brand. They set up super easy getting the touch sequence down has been a lil trickier but figuring it out. I was tryna find a cheap alternative and I thought these were gonna be good but they are NOT! Buy them, youll love them. Tile support claims its working fine even though the app hasnt connected in months, and the app shows the location as of September 3rd. The shelf is sturdy.