Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Logitech MK540 Advanced Wireless Keyboard and Mouse Combo for Windows, 2.4 GHz Unifying USB-Receiver, Multimedia Hotkeys, 3-Year Battery Life, for PC, Laptop, QWERTY UK Layout, BlackThe MK540 Advanced is an instantly familiar wireless keyboard and mouse combo built for precision, comfort, and reliability. The full size keyboard features a familiar key shape, size, and feeling and the contoured and ambidextrous mouse has been designed to fit comfortably into either palm. PLUG AND PLAY WIRELESS COMBO: Connect your keyboard and mouse with one tiny Logitech Unifying USB receiver. Youll get a reliable and encrypted wireless connection
The MK540 Advanced is an instantly familiar wireless keyboard and mouse combo built for precision, comfort, and reliability. The full-size keyboard features a familiar key shape, size, and feeling – and the contoured and ambidextrous mouse has been designed to fit comfortably into either palm.PLUG AND PLAY WIRELESS COMBO:
Connect your keyboard and mouse with one tiny Logitech Unifying™ USB receiver. You’ll get a reliable – and encrypted – wireless connection up to 10 meters away with virtually no delays or dropouts.
FAMILIAR TYPING EXPERIENCE:
The keys have been optimized for improved accuracy and reduced noise – and your fingers will immediately feel at home on the familiar key surface and layout. The palm rest and adjustable tilt legs keep you comfortable for long stretches at the desk.
CONTOURED COMFORT MOUSE:
The wireless mouse’s contoured shape and soft rubber side grips are designed to fit comfortably in either your right or left palm – and enhanced tracking and precise cursor control keep you in command.
PRODUCTIVITY AT YOUR FINGERTIPS:
Convenient and essential hot keys give you direct access to media, calculator and battery check functions. Preset Fn keys can even be personalized in Logitech Options to meet your specific needs.
RELIABLE AND HASSLE-FREE:
Your keyboard won’t require new batteries for 36 months and your mouse stays powered for 18 months. The keyboard is spill resistant to 60ml of liquid and abrasion resistant key printing ensures your keys won’t quickly fade.
Key Features
Keyboard
• 36-month keyboard battery life.
• Familiar key shape and feel, whisper-quiet.
• 3 tilt positions. (natural, 4°, and 8°)
• Spill resistant design.
• Abrasion resistant key print.
• Advanced 2.4GHz wireless. (10 meters)
• Wireless encryption.
• Tiny USB receiver with Logitech Unifying™ Technology.
• On/off power switch.
• Caps lock indicator light.
• Battery indicator light.
Mouse
• 18-month mouse battery life.
• Contoured shape with soft rubber grips.
• Full-size and ambidextrous.
• Advanced optical tracking.
• 3 buttons, scroll wheel.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 2187 reviews
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Product Reviews
★★★★★ 1
This version doesn’t work
I used these 2 nights in a row. I was hoping Oracoat found a solution to the problem people like me have with the regular Xylimelts: irritation of gums. As others have noted the “sensitive” version doesn’t melt and the goo that remains can be difficult to remove. I didn’t have too much trouble after the first night. However, the second day after use, it was so hard to get the remains out, I wound up with a very sore spot from digging it out. I will toss the rest.
It’s too bad this effort fizzled. I hope Oracoat will find a solution For sensitive mouths. In the b meantime, I will use the original for a few nights and then stop before repeating. The idea behind the original product is fantastic. Unfortunately this attempt to make it usable for people with sensitive mouths hasn’t worked. Please try again.
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Reviewed in the United States on March 25, 2025
★★★★★ 5
Helped with Dry Mouth
Followed the instructions on the box and everything turned out amazing! Absolutely love the results and relief I felt
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Reviewed in the United States on April 21, 2026
★★★★★ 3
An improvement over the original product, but could be better
I had used the original Xylimelts a few years back for my night time very dry mouth. They worked very well, completely dissolving overnight, but they caused sores inside my cheeks. Recently I discovered this new version which was purported to be made without the offending ingredients. They don't work quite as well, as they don't completely dissolve, but so far haven't caused any irritation. My mouth isn't completely parched as it was without any product, so it is definitely better than nothing. There is a gel-like residue in the morning that needs to be scraped off the teeth. I think Oracoat has some more R & D to do.
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Reviewed in the United States on August 25, 2025
★★★★★ 4
These work well!
These work to keep my mouth moist for hours. The only downside is the glue stays in your mouth till you can scrape it out with your finger. I thought it would dissolve but it didn’t. Very grateful to find something that moistens my mouth for so long though. They’re easy to use too. Taste slightly sweet but otherwise I didn’t notice anything.
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Reviewed in the United States on October 8, 2024
★★★★★ 5
Xylimelts Sensitive
I was sensitive to the regular Xylimelts after a few months use. Painful gums and hives inside my lips and cheeks. The sensitive version immediately corrected the problem and I’ve been using them without issue for nearly a year. The product is a lifesaver for drymouth that occurred when I was sleeping.
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Reviewed in the United States on March 28, 2026