Logitech M720 Triathlon Cordless Laser Mouse, WiFi Bluetooth dual connection, Pair up to 3x computers with easy-switch button, Logitech Flow (copy and paste between devices) with SSL and AES256 bit encryption, Hyper-fast scrolling, gesture support, 8 buttons, 4 ways tilt wheel, battery indicator, 1000Dpi – with unifying receiver – USB