Logitech MK850 Performance wireless keyboard and mouse combo, tested and working. Includes the K850 full-size keyboard, M720 Triathlon mouse, Logitech Unifying USB receiver, and the plain black box. Light surface marks on the mouse from normal use; everything functions as it should.

This is Logitech’s multi-device productivity set, built for people who jump between a desktop, a laptop, and a tablet all day. Both the keyboard and mouse pair with up to three devices at once through Bluetooth or the included Unifying receiver, and the dedicated Easy-Switch buttons (the white 1-2-3 keys on the keyboard, the thumb switch on the mouse) flip between them instantly. Works across Windows, macOS, Chrome OS, iOS, and Android, with dual-labeled keys so the layout makes sense on a PC or a Mac.

The K850 pairs Logitech’s PerfectStroke key system with concave keycaps for quiet, accurate typing, an integrated padded palm rest, and adjustable tilt legs with three positions. Full number pad, media controls across the F-row, and Logitech rates it for up to 36 months of battery life. The M720 Triathlon is a contoured right-handed mouse with eight programmable buttons, a hyper-fast scroll wheel that flips between ratcheted and free-spin modes for blasting through long documents, a thumb-rest and side buttons, and up to 24 months of battery life. Logitech Options software unlocks button customization and Flow, which lets you move the cursor and copy-paste between computers.

Keyboard takes 2 AAA batteries and the mouse takes 1 AA battery; batteries not included.

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