Several people claim that it frequently comes off. The three devices I used these mice with were tablets with Bluetooth 4.0, Bluetooth 3.0, and an ASUS USB-BT400 (BT 4.0) adaptor. The mouse will occasionally (rarely) fall off a tablet with BT 4.0, freeze, and then reawaken. Works reliably on different hardware. One of the mice, which was utilized the most, failed after eight months as well. Some sort of grease leaked out and covered the scroll sensor after smearing it. You must remove the mouse's rug-riding legs in order to disassemble it. The legs will have to go (there are 4 screws with an asterisk next to them. An Asian T6 screwdriver approached me. Remove the top portion by removing the screws (the sides with the rubber remain).
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