Logitech M720 Triathlon: 3-Device Switching and 24-Month Battery

The Logitech M720 Triathlon in Black is a full-size wireless mouse for people who regularly move between more than one computer or tablet. This article covers Amazon US child ASIN B087Z6LSHW and the black M720 Triathlon, not the M705 Marathon, MX Anywhere, or a different Logitech mouse.

The buying case is straightforward: M720 can stay paired with up to three devices, switch between them with a dedicated Easy-Switch button, and connect either over Bluetooth or the included Logitech Unifying receiver. Logitech also adds a dual-mode scroll wheel, eight buttons, and a rated battery life of up to 24 months from one AA battery.

Three-device switching is the main reason to buy the M720

If you work with a desktop, laptop, and tablet during the same day, the M720 can keep all three pairings stored. Pressing the Easy-Switch button moves control from one paired device to another instead of making you re-pair the mouse each time.

That matters more than an extra button or two because it changes the whole workflow for a multi-device desk. Logitech also supports Flow through Logi Options+, which can move the pointer between compatible computers and copy text, images, or files across them. Flow is software-dependent, so it is a useful extra rather than something every buyer will use.

Connectivity is flexible. Bluetooth avoids occupying a USB port, while the included Unifying receiver gives you a 2.4 GHz USB-A option and can share one receiver with other compatible Logitech peripherals. Buyers using newer USB-C-only laptops may still need an adapter if they want to use the receiver instead of Bluetooth.

Dual-mode scrolling is built for long documents

The scroll wheel can switch between a conventional ratcheted mode and hyper-fast free-spinning. The first is useful when you want controlled line-by-line movement; the second is designed for moving quickly through long webpages, spreadsheets, or documents.

The wheel also tilts for horizontal scrolling. That is especially relevant for wide spreadsheets or timelines where moving left and right is otherwise awkward. Logitech combines this with high-precision optical tracking and adjustable cursor settings through its software.

The M720 has eight buttons in total. Two side buttons handle common back/forward actions, and there is also a thumb button that can be customized in Logi Options+ on supported systems. This is more control than a basic office mouse without turning the product into a high-button-count gaming mouse.

Full-size comfort comes with more weight than a travel mouse

Logitech lists the M720 at 115 mm tall, 74 mm wide, and 45 mm deep, with a weight of 135 grams including its AA battery. The shape is contoured for right-handed use and covered with a soft rubber surface around the grip.

Those dimensions make the mouse better suited to a desk bag than a shirt pocket. If your priority is the smallest possible travel mouse, a flatter compact model will be easier to carry. The benefit is a fuller palm-supporting shape and room for the extra controls.

Logitech rates the button durability at up to 10 million clicks. That is a manufacturer endurance figure, not a prediction of exactly how long any individual unit will last.

A single AA battery keeps charging off your desk

Logitech rates the M720 for up to 24 months of battery life from one included AA battery, with actual life depending on usage and computing conditions. There is no rechargeable battery or USB charging cable to manage; when the battery is eventually depleted, you replace the AA cell.

That is convenient if you prefer long intervals between battery changes, but it is also a tradeoff for buyers who specifically want a built-in rechargeable mouse. The M720 also lacks the ultra-light weight and silent-click emphasis of some newer models.

Choose B087Z6LSHW if you want one mouse to stay paired with three devices, switch quickly between them, scroll rapidly through long content, and run for long stretches on a replaceable battery. Skip it if you want USB-C charging, an ultra-light travel body, or a symmetrical left/right-handed shape.

The M720 makes the most sense when multi-device switching is part of your normal day. The hyper-fast wheel, programmable controls, and long AA battery life are useful additions, but the strongest reason to buy is avoiding the repeated reconnecting that comes with a one-device mouse.