Sony Japan has recently issued a replacement program for the mouse we have reviewed (VGP-BMS10/S) and Sony USA has followed up as well.
Sony has identified a quality issue with the VGP-BMS10/S Bluetooth Mouse. When inserting batteries into the mouse, a battery terminal of the mouse can break which may cause the mouse to stop working, and under limited circumstances, cause the mouse to overheat. We are contacting customers to request that they stop using the mouse and remove the batteries.
Sony will send a return shipping container along with shipping label to return the VGP-BMS10/S. Once your mouse is received, an improved VGP-BMS10/S will be shipped when available (expected early October). The replacement product will be provided at no charge.
We apologize for this inconvenience and are always working to improve our quality. If you have any questions, or to arrange for a replacement mouse, please call Sony Customer Support at 1-888-476-6972.