This is a high-end model of Logitech's mobile mouse. It is brand new and unused. Although it's the Bluetooth Edition, it can also connect via a USB receiver (Unifying). The Unifying receiver is sold separately, but I have a few unused ones, so I can include one for an additional 500 yen. (Pairing with Unifying requires PC-specific software) It can connect to three devices simultaneously and switch between them with a button. Bluetooth rechargeable mouse Equipped with Easy-Switch function Up to 4000 DPI Can be used for up to 70 days - Model Name: MX ANYWHERE 2S - Connection Method: Bluetooth - Supported OS: Windows, macOS - Battery Type: High-efficiency rechargeable battery - Usage Time: Up to 70 days - DPI: Up to 4000 DPI - Color: Black MX1600CR2 Thank you for viewing. Power Source: Rechargeable Connection Type: Wireless (Bluetooth) Other Features: Multi-pairing, Tilt Wheel (horizontal scrolling)