Logitech M510, M705 and K400 Plus: Everyday Wireless Mouse and Keyboard Lineup

The Logitech M510 suits buyers who want a cheap, ambidextrous, battery-powered office mouse, the M705 Marathon suits right-handed users who want the longest battery life and a comfortable shaped body (but it is reported as discontinued), and the K400 Plus suits a couch PC, home theater setup or media box rather than a gaming desk. None of the three is a gaming peripheral in the competitive sense, but each has a legitimate place in a gamer’s setup: a spare mouse for a laptop, a keyboard for a living-room PC running Steam Big Picture, or a low-maintenance mouse for a secondary work machine.

This guide covers what the maker lists, what reviewers report, where the lineup falls short for gaming, and which alternatives make sense. Specs below are the ones stated on Logitech’s pages or repeated by multiple outlets. Where sources disagree, the article says so instead of picking a number.

Logitech Signature Plus M750 L Wireless Mouse - for Large Hands, SmartWheel, Bluetooth, Multi Device, 24-Month Battery, Silent Clicks, Customizable Side Buttons, Contoured Shape - Graphite

Chosen because it specifies for Large Hands and SmartWheel.

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Logitech Signature Comfort Plus M850 L Wireless Mouse Bluetooth - Graphite | Bluetooth, palm cushion, 24-month battery, customizable buttons, for Windows, Mac, iPad

Chosen because it specifies Graphite and Bluetooth.

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At a Glance: M510, M705 and K400 Plus

Logitech M510: The Ambidextrous Budget Pick

Logitech’s own M510 page describes a wireless mouse with a USB receiver, a connection range of up to 10 meters, and battery life of up to 24 months with an on/off switch and auto-sleep to save power. It lists five programmable buttons that can be customized in Logitech Options software, adjustable speed through those buttons, and compatibility with Windows, macOS and Chromebook. The receiver supports Logitech Unifying technology, which pairs up to six compatible Logitech peripherals through a single receiver.

Reviewers comparing it with the M705 describe the M510 as ambidextrous with a longer body that fits larger hands, and some praise its responsiveness. RTINGS, in an older comparison, says it feels cheaper in build quality than the M705. Another point reviewers raise is that the feet are PTFE but still do not glide especially smoothly.

Who the M510 suits

• Left-handed users, since the shell is symmetrical, although the side buttons sit on one side only.
• Buyers who want a spare mouse for a laptop bag or a second PC.
• Casual gamers playing strategy, simulation or turn-based games where sensor speed is not a factor.

Where it falls short

The maker does not publish gaming-oriented numbers such as maximum polling rate or tracking speed on the page, so competitive players have nothing to evaluate. There is no Bluetooth listed, so it needs a free USB port. The page also lacks weight and dimension figures, so anyone sensitive to size should consult the maker’s full specification sheet before buying.

Logitech M705 Marathon: Long Battery Life, Possibly Gone

The Marathon M705 was built around one idea: change batteries rarely. Logitech’s manual, as hosted by third-party manual sites, lists expected battery life of up to 36 months. Retailer listings describe a 2.4 GHz connection through a Unifying receiver, a 1000 dpi sensor and a range of about 33 feet. Weight is listed by one retailer as about 135 g with an AA battery, while another listing gives a lower figure that is probably without batteries, so treat weight as approximate.

Button counts differ by listing. Some retailers state five customizable buttons and one states seven, so the exact count is not confirmed here. Reviewers describe the M705 as a right-slanted ergonomic mouse with a thumb rest, and mention a scroll wheel that can be switched between ratchet and free-spinning modes. RTINGS rates it as the better office mouse of the pair, while noting its plastic feet are not especially smooth.

Availability in 2026

Logitech’s own M705 page could not be loaded for this guide. At least one retailer marks the mouse as discontinued, and the wider Logitech catalog has moved toward newer Bluetooth and Logi Bolt designs. Anyone shopping for it should treat the M705 as an older model that may only be available as remaining stock or from third-party sellers, and should confirm its status with the maker before relying on it. If it is unavailable, the M510 or a newer multi-device mouse are the realistic substitutes.

Who the M705 suits

• Right-handed users who want a full-size shape and minimal battery maintenance.
• Offices, shared PCs and media rooms where nobody wants to open the battery door often.

Logitech K400 Plus: A Keyboard for the Couch

Logitech’s page for the K400 Plus describes a wireless keyboard with a large built-in touchpad, a Unifying USB receiver, a range of up to 33 feet (10 meters), battery life of up to 18 months and an on/off switch. It lists compatibility with Windows, Android 7 or later and Chrome OS, preset media keys for volume and other shortcuts, and a spill-resistant design tested for up to 60 ml of liquid. Software support through Logitech Options lets some keys be customized.

Reviewers consistently place it in the living-room category. Ultrabookreview calls it cheap, rugged and decent to type on, and reports about a year of battery life. Techgage says the keys allow quick, accurate and quiet typing and that gestures are accurate. RTINGS rates it more modestly, citing flex in the all-plastic board and slippery keycaps, and notes it has no Bluetooth, so it does not suit phones or tablets. Ultrabookreview also mentions long-term reliability concerns with connectivity and the touchpad. The keyboard has no backlight.

Gaming use

The K400 Plus works for navigating a game launcher, starting titles in a Steam Big Picture setup, browsing and media playback from the sofa. It is not designed for fast, repeated key presses or low-latency competitive play, and reviewers describe it as unsuited to serious gaming. The touchpad covers cursor control, but most players will want a mouse for anything beyond menus.

Pick X If… Decision Table

Compatibility and Setup Notes

• Receiver sharing: The M510 and K400 Plus both use Unifying technology, so one receiver can serve both when paired through Logitech’s Unifying software. The M705 is also listed with a Unifying receiver, but some listings mention a different receiver revision, so look at which receiver is in the box.
• USB ports: Every model here needs a USB-A port for the receiver. Laptops with only USB-C ports need an adapter or hub.
• Operating systems: The maker lists Windows and macOS for the M510, and Windows, Android and Chrome OS for the K400 Plus. Linux support is not stated on the pages reviewed.
• Batteries: Battery life figures are maximums from the maker and depend on usage. Heavy daily use will shorten them.
• Interference: A receiver placed behind a metal PC case can lose range. A short USB extension to bring it closer is a common fix.

Alternatives to Consider

• Logitech M720 Triathlon: Described by the maker as a multi-device mouse that can pair with several computers over Bluetooth or a receiver, which addresses the M510’s lack of Bluetooth. Confirm its availability on Logitech’s site.
• Logitech M330 Silent Plus or similar compact mice: A quieter, smaller option for travel, with the same battery-powered approach.
• A dedicated gaming mouse: For FPS or fast-paced play, a purpose-built wireless gaming mouse with a published sensor, polling rate and weight is a better fit than any of these three. These come in budget, mid-range and premium tiers, and the right tier depends on how competitive you are.
• A compact wireless keyboard with Bluetooth: If you want a living-room keyboard that also works with phones or tablets, a Bluetooth model avoids the K400 Plus limitation.

Strengths and Limits Summary

The lineup’s strengths are low upkeep, simple plug-in setup and long stated battery life. Its limits are the dated feature set, no Bluetooth on the models reviewed, and no focus on speed or precision for competitive gaming. For general use the trio is sensible; for a main gaming desk it is not the right tier.

Frequently Asked Questions

Is the Logitech M510 good for gaming?

It is fine for casual and slower-paced games, but Logitech does not market it as a gaming mouse and does not publish gaming-oriented specs on its page. Competitive shooter players generally want a lighter mouse with a published sensor and polling rate. Treat the M510 as an everyday or backup mouse.

How long do the batteries last in the M510, M705 and K400 Plus?

The maker lists up to 24 months for the M510 and up to 18 months for the K400 Plus. The M705 manual lists up to 36 months. These are maximums that depend on usage, so real life will usually be shorter with heavy daily use.

Is the Logitech M705 Marathon still sold?

At least one retailer lists it as discontinued, and Logitech’s own page for it could not be loaded during research. It may still appear as remaining stock. Look at Logitech’s catalog before buying, and consider the M510 or a newer multi-device mouse if it is unavailable.

Does the K400 Plus work with Bluetooth devices?

No. Reviewers such as RTINGS note it has no Bluetooth, and the maker describes a USB Unifying receiver. It is aimed at PCs, Chrome OS and Android devices that can use the receiver or a compatible adapter.

Can one receiver run the M510 and K400 Plus together?

Both use Logitech Unifying technology, which the maker says pairs up to six compatible devices to one receiver. You would use Logitech’s Unifying software to pair them. This saves a USB port on a small PC.

Is the K400 Plus suited to typing all day?

Reviewers describe it as decent for casual typing but note flex in the plastic body and slippery keycaps, and one outlet reports long-term reliability concerns. For heavy daily typing, a full-size keyboard with a more solid frame is usually a better choice.