Wireless mouse, here has changed between the past and the present! - PHILE WEB
Is your computer mouse wireless? If you're using a laptop computer with a built-in trackpad, I think many people who need a mouse, such as a desktop machine, choose the wireless type. The wireless mouse, the communication function has changed greatly from ten years ago when the product started to appear. Initially, products that used their own wireless method (communication with the included USB dongle) were the mainstream, but eventually they were replaced by products that depended on communication specifications (HID profile) up to Bluetooth 3.x, and now Bluetooth 4. Products that use communication specifications after .x (Bluetooth LE) are common.
Elecom's mouse "M-BY10BR" compatible with Bluetooth 5, not just Bluetooth 4. The wireless mouse compatible with Bluetooth LE complies with the communication specifications of HID Service (HIDS) and HID Over GATT (HOGP). Since it is not compatible with Bluetooth 3.x or earlier, it cannot be used with older PCs/OS that do not support Bluetooth LE, but it has many advantages over wireless mice that support communication specifications up to Bluetooth 3.x. One of them is power saving design. Bluetooth LE consumes much less power than Bluetooth 3.x and earlier, and the communication specifications have been changed to less waste. In addition to the use of infrared LEDs that consume less power, there are even products that claim that a single AAA battery will not need to be replaced for about 10 months. Depending on the product, you can also manage the remaining battery power. Bluetooth LE provides communication specifications (Battery Service, etc.) for battery management, and it is possible to grasp the remaining battery level of the wireless mouse on the PC side. Since it lasts a long time, there is little need to be conscious of the remaining battery power, but it is certainly a safe function to have.