ELECOM mouse, previously used and confirmed to be working. ┈┈以下、商品説明┈┈┈┈┈┈┈┈┈┈ ■ Interface: USB ■ Connector Type: USB (A) male ■ Number of Buttons: 8 ※ Including wheel button ■ Number of Wheels: 1 ■ Ball Diameter: Approximately 52mm ■ Horizontal Scroll Function: ○ ■ Continuous Operation Time: Low Energy Mode: Approximately 235 hours, High Speed Mode: Approximately 137 hours ■ Power Supply (Main Unit): 2 AA alkaline batteries, AA manganese batteries, or AA nickel-hydrogen batteries ■ Rated Voltage (Main Unit): 1.5V ■ External Dimensions (Mouse Body): Width 114.7mm x Depth 181.9mm x Height 57.2mm ■ Weight (Mouse Body): Approximately 260g ※ Excluding batteries ■ External Dimensions (Receiver): Width 13.1mm x Depth 18.2mm x Height 5.0mm Power Source: Battery-powered Connection Type: Wireless (Bluetooth)