Instant purchase is welcome. elecom Elecom Wireless Mouse Blue LED M-BL2DBBK Black 5 buttons 2.4GHz Uses 2 AAA batteries Instruction manual I turned it on with the included batteries (expired) to check the operation, and it worked normally. Although it is a new, unused item, there is some slight soiling on the package due to being stored at home. [※] The color and condition of the product may look different depending on your monitor and environment. Please refrain from cancellations or returns due to customer reasons, such as a different impression of the product. Thank you. Power supply...Battery-powered Connectivity...Wireless (Bluetooth)