Lenovo 4X31K03931 keyboard Mouse included RF Wireless + Bluetooth US English Black

The Lenovo 4X31K03931 Keyboard and Mouse combo offers a full-size wireless keyboard with dual RF Wireless and Bluetooth connectivity and an included wireless mouse. The keyboard uses scissor key switches for a responsive typing feel and is finished in black to suit modern workspaces. Both devices are made with approximately 65% recycled material and the mouse features a high-precision 4,000 DPI sensor and an ergonomic bio-rubber body.

Advantages

The combo provides flexible connectivity with RF Wireless and Bluetooth options, a full-size layout for familiar key placement, and scissor switches for improved key stability and typing comfort. The included mouse delivers precise tracking at up to 4,000 DPI and an ergonomic grip thanks to its bio-rubber construction. Using recycled materials reduces environmental impact.

Suitable for

• Office and home productivity tasks
• Remote work and multi-device setups (Bluetooth + RF)
• General desktop use and data entry
• Users who prefer a full-size US English keyboard layout

Key specifications

• Device interface: RF Wireless + Bluetooth
• Keyboard form factor: Full-size (100%)
• Keyboard language: US English
• Mouse included: Yes
• Product colour: Black
• Mouse sensor: up to 4,000 DPI
• Materials: ~65% recycled material; mouse body made from bio-rubber

How to use

Connect the keyboard and mouse via RF Wireless using the provided USB receiver or pair each device with a computer or tablet over Bluetooth. Place the keyboard on a flat surface at a comfortable distance and rest your wrists lightly while typing to maintain ergonomic posture. Use the mouse on a stable surface for accurate tracking; adjust pointer speed in the operating system settings if needed.

Recommendations

For best battery life and stable operation, keep the keyboard and mouse within the recommended wireless range of the host device, avoid excessive liquid exposure, and pair via RF for minimal latency when performing precision tasks.