For typing yes it is, for the mouse clicks no different then any other mouse.

Can it be used with a unifying USB receiver?

The receiver looks like one but it's not. K400+ is a unifying receiver.

My wife bought this keyboard and we really like it, but, one question: Does the keyboard have an on/off switch?

No. It goes to sleep/powers down when not in use and is woken up/turned back on by pressing a key.

can you gimme compatible batteries link #GP ALkaline to buy ?

Any battery is fine. I use energizer ultimate lithium.. Hope this helps.

Logitech Mk240 Nano Mouse And Keyboard Combo Black Color

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

⌨️🖱️ Elevate your workspace with sleek, wireless precision!

WIRELESS FREEDOM - Reliable nano USB receiver offers lag-free connectivity without cluttering your workspace.
ERGONOMIC COMFORT - Adjustable tilt legs on the keyboard ensure personalized typing angles to reduce strain.
PRECISION CONTROL - High-definition optical tracking mouse delivers smooth, accurate cursor movement.
SPACE SAVVY DESIGN - Compact keyboard and mouse combo fits effortlessly on any desk or on-the-go setup.
LIGHTWEIGHT PORTABILITY - Weighing just 454g combined, perfect for professionals who work anywhere, anytime.

The Logitech MK240 NANO is a wireless keyboard and mouse combo designed for professionals seeking a compact, ergonomic, and portable input solution. Featuring adjustable keyboard height, a mid-sized high-definition optical mouse, and a tiny plug-and-play USB receiver, it offers reliable wireless performance and space-saving convenience ideal for both office desks and mobile work environments.

Specifications

ASIN	B01N4EV2TL
Antenna Location	Office
Are Batteries Required	Yes
Best Sellers Rank	#43,775 in Computers ( See Top 100 in Computers ) #499 in Computer Keyboard & Mouse Combos
Brand	Logitech
Color	black
Colour	black
Compatible Devices	Personal Computer
Compatible Operating System Family	Windows
Compatible devices	Personal Computer
Connectivity Technology	Wireless
Connectivity technology	Wireless
Customer Reviews	4.2 out of 5 stars 10,552 Reviews
Hand Orientation	Ambidextrous
Item Weight	454 Grams
Keyboard Backlighting Color Support	Single Color
Keyboard Description	Multimedia
Keyboard Layout	QWERTZ
Keyboard description	Multimedia
Manufacturer	Logitech
Mfr Part Number	MK240 NANO
Model Number	920-008202
Movement Detection	Optical
Number of Batteries	3 A batteries required.
Number of Keys	78
Operating System	Windows, Chrome OS
Other Special Features of the Product	Mini Size
Power Source	Battery Powered
Special features	Mini Size
UPC	739812298663 097855124104

Reviews

J**L

perfect

suitable for on the go jobs

8.02.2025

M**O

bad mouse

mouse is hard to click

10.05.2025

K**R

Very functional

The product arrived very promptly and was exactly as described. I am very happy with the purchase

10.02.2026

A**A

So far the best one I had

Great product. Works flawlessly. They only thing is that I do not like yellow color but it is life threatening. If it did not have a yellow color I would buy more

10.05.2023

R**Y

Great set

Small size which is perfect for travel.

10.05.2026

T**S

Small and Useful

Works like a charm. Great for small fingers.

13.09.2024

A**Y

Four Stars

Mouse feels cheap but works great

29.12.2017

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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Received my product in pristine condition. Great service overall.

1 month ago