Logitech Signature Comfort Plus M840 L Bluetooth Mouse

A natural fit in your hand

Shaped for right hands and built with cozy side grips, Signature Comfort M840 L helps you stay comfortable and in control, hour after hour.

Gentle hold, comfy control

Feels like it was made just for you. The sculpted shape fits naturally in your hand. The thumb rest and extended rubber side grip give you confidence and control. It’s the perfect fit.

Effortless scrolling, quiet clicks

Scroll line by line or fly through pages with SmartWheel—all with quiet clicks for a calm, focused workflow.

Make it yours - customize your buttons

Do more than you ever dreamed with the Logi Options+ App. Personalize your experience to make it work for you.

Easy-Switch and Bluetooth pairing for simple connections

Connect with Bluetooth, then swap between up to 3 devices instantly with Easy-Switch—just a tap, no dongle needed, perfect for multitasking.

Power that keeps going

Signature Comfort M840 L stays powered up for up to 24 months—no constant battery changes.

Additional Features

Works on nearly any platform

Don’t worry about your device’s operating system—connect wirelessly to Windows, macOS, ChromeOS, Linux, iPadOS, and Android.

Work, chat and anything else with a lighter footprint.

Our products are responsibly made to help you seamlessly transition between work, life, and everything in between, making everyday moments feel easier and better - all while considering sustainability as a key criterion throughout every stage of the product development process.

Plastic matters

Plastic should have more than one life

We are innovating to give plastics a second life. Today, three out of four of our products are made with Next Life Plastics. And of course, no compromise on quality.

Packaging matters

It's not just what's in the box

We prioritize using less plastic in our packaging, and more paper sourced from FSC™-certified forests and other controlled sources. This helps support responsible management of the world's forest.

Materials and Sustainability

Recycled Plastics

The plastic parts in Signature Comfort M840 L include certified post-consumer recycled plastic to give a next life to plastic from old consumer electronics and help reduce our carbon footprint.

• Graphite plastics: 63% of recycled material
• Off White plastics: 49% of recycled material

What's in the box

• Mouse with 1 x AA battery (included)
• User documentation

1. Payment with a Maybank Card or Redemption of TreatsPoints/Membership Rewards Points in www.maybank.com/mytreats is only available for Maybank2U account user, if you have not registered as a Maybank2u account user, click HERE to learn how to register your Maybank2U account.
2. Start browsing and selecting the items that you wish to redeem.
3. Click the "Add to Cart" icon to add more items to your shopping cart.
4. For immediate checkout, please click "Redeem now" or you may select "Redeem More" if you wish to continue shopping.
5. At Shopping Cart, once you click ‘Proceed to Redeem”, you will be requested to login your Maybank2u account for payment and points redemption.
   1. Redeem with Full Points:
      1. At “Available Points”, Choose to redeem using TreatsPoints or Membership Rewards Points. Available points balance will also be displayed.
      2. Click “Continue” to proceed check out.
   2. Redeem with Partial Points (Points + Card) [*Not applicable for Air Miles redemption]
      1. Input preferred number of points at “Points to Redeem”, balance amount to pay will be auto calculated and display at “Balance to Pay”.
      2. At “Pay from”, select preferred card to pay for the balance amount.
      3. Click “Continue” to proceed check out
   3. Full Payment with Card [*Not applicable for Air Miles redemption]
      1. At “Pay from”, select preferred Card to pay for full amount.
      2. Click “Continue” to proceed check out
   4. EzyPay Instalment with Credit Card (Note: For minimum charge to card amount of RM500, not applicable to Charge or Debit cards) [*Not applicable for Air Miles redemption]
      1. Select preferred Card at “Pay from”,
      2. “Tick” on Apply Maybank EzyPay (Note: this option will automatically available with minimum RM500 at “Balance to Pay”
      3. Select Tenure of instalment
      4. Click “Continue” to proceed check out
6. Upon selecting “Continue”, delivery address will be auto-populated as per Maybank2U Credit/Debit card billing address. Please ensure delivery address information is in order, including contact number and email address. You may edit delivery address if require to deliver to alternative address.
7. A Transaction Authorized Code (TAC) will be sent to you via SMS to authorize the redemption transaction.
8. Key in the TAC Number and click Confirm.
9. Please allow a few seconds for the redemption transaction to be processed.
10. Upon successful redemption, logout and close the Maybank2U page.
11. The order is now completed and you may print a copy of the receipt as record of the redemption made and to track the delivery of the items redeemed.
12. You will also receive an Order Confirmation via email.