Lenovo 4X31K03977 Keyboard & Mouse Set

Wireless · Full-size · 4000 DPI

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Connection Wireless
Layout Full-size
Max sensitivity 4000 DPI

Lenovo 4X31K03977 Keyboard & Mouse Set is a wireless keyboard and mouse set. One box and one receiver: an easy pick for a new PC or a work desk. It came out in 2025.

Released: 2025-07-19

Specifications

Key specs

Connection: Wireless
Layout: Full-size
Max sensitivity: 4000 DPI
Released: 2025-07-19
Part number: 4X31K03977

Keyboard

Recommended usage: Office
Connectivity technology: Wireless
Device interface: RF Wireless + Bluetooth
Keyboard key switch: Scissor key switch
Keyboard language: Ukrainian
Keyboard form factor: Full-size (100%)
Numeric keypad: Yes
Keyboard keys operating life: 10 million characters
Multi-device support: Yes
Windows keys: Yes
Programmable hot keys: Yes
Frequency band: 2.4 GHz
Key pitch: 1.91 cm
Certification: CE;CB;BQB;TUV Mark; cTUVus;FCC;IC;IDA;WPC; BIS;SIRIM;NTA;SDOCo; SDPPI;NTC;MIC;AITI;RCM; NCC;BSMI;MSIP;VCCI;JRF; SRRC;ANRCETI;ICASA; MINCOM;STA;MoC; UkrSEPRO;ACI;FAC;TRA; NTRA;TRC;MOC;ICT; INACOM;NCC;ANRT;CERT; CNC/AFTIC;ANATEL; SUBTEL;IFETEL;TUV NOM

Design

Product colour: Grey

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Power

Power source type: Battery
Battery recharge time: 2 h

Battery

Battery technology: Lithium
Battery capacity: 420 mAh

Mouse

Mouse included: Yes
Form factor: Ambidextrous
Movement detection technology: Optical
Movement resolution: 4000 DPI
Buttons quantity: 8
Scroll: Yes
Scroll type: Wheel
Button functions: DPI switch
Mouse battery type: Built-in battery
Mouse battery technology: Lithium
Mouse battery capacity: 380 mAh
Mouse battery life: 3 month(s)
Buttons durability (million clicks): 10

Operational conditions

Operating temperature (T-T): 0 - 40 °C
Operating relative humidity (H-H): 20 - 95%

Weight & dimensions

Keyboard dimensions (WxDxH): 437.4 x 128.8 x 14.8 mm
Keyboard weight: 586 g
Mouse dimensions (WxDxH): 111.29 x 62.23 x 36.06 mm
Mouse weight: 80 g

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About this product

The Lenovo Professional Wireless Rechargeable Combo Keyboard and Mouse is a revolution in productivity and design. Its full-size keyboard sports scissor switches that create an elevated typing experience. Its mouse marvellously crafted from bio-rubber keeps you comfortable all day, and sports an impressive 4,000 DPI range. Plus, both the keyboard and mouse are made from eco-friendly 65% recycled material that protects the environment.

4X31K03977 vs similar keyboard & mouse combos

	Lenovo 4X31K03977 Keyboard & Mouse Set	Lenovo GX31S04968 Keyboard & Mouse Set	Lenovo 4X31S04836 Keyboard & Mouse Set	Lenovo GX31S04978 Keyboard & Mouse Set
Connection	Wireless	Wireless	Wireless	Wireless
Layout	Full-size	Full-size	Full-size	Full-size
Max sensitivity	4000 DPI	4000 DPI	4000 DPI	4000 DPI
Released	2025	2026	2026	2025