Wireless Logitech Keyboard and Mouse Combo with Dongle.

⌨️ Logitech K520 Wireless Keyboard (from MK520 combo series)

Full‑size layout with number pad, softly rounded Incurve keys for ergonomic comfort, and media shortcut hotkeys (mute, volume, media control)
Equipped with a palm rest, spilled‑liquid resistance, and adjustable tilt legs for ergonomic typing
Battery life of up to 3 years using 2×AA batteries, supported by power‑saving auto‑sleep modes and on/off switch
Uses a Logitech Unifying nano USB receiver, enabling pairing with up to six compatible devices
Wireless range up to ~10 m (30 ft), 2.4 GHz connectivity, plug‑and‑play supported on Windows, with limited legacy OS support
Keyboard dimensions: ~451 × 192 × 23 mm; weight ~762 g

Known as the Marathon Mouse, M705 offers ergonomic right-handed design with rubber side grips and contoured palm support
Features dual‑mode “hyper‑fast” scroll wheel, able to toggle between fast scrolling and precise line‑by‑line; supports horizontal scrolling via tilt wheel.
Optical/Laser precision tracking at ~1,000 DPI with stable performance on most surfaces
Offers up to 3 years of battery life on 2×AA batteries, with power‑saving auto‑sleep and an on/off switch
Connects via Logitech Unifying receiver (same as the K520), allowing both devices to work with a single dongle
Mouse physical specs: ~109 × 71 × 42 mm; ~135 g with batteries; receiver ~14×19×6 mm ~1.8 g

Both the K520 keyboard and M705 mouse use Logitech Unifying technology, allowing them to pair and operate with a single Unifying USB nano‑receiver
Pairing is straightforward using Logitech Unifying Software, available from Logitech’s support site. Once paired, both devices function through the one receiver in the same computer
Cross compatibility with other Unifying devices is supported—but note that devices using Logitech’s newer Logi Bolt dongles are not compatible with Unifying receiver bundles