According to Apple:
The “Magic Mouse is wireless and rechargeable, with an optimized foot design that lets it glide smoothly across your desk. The Multi-Touch surface allows you to perform simple gestures such as swiping between web pages and scrolling through documents. The incredibly long-lasting internal battery will power your Magic Mouse for about a month or more between charges. It’s ready to go right out of the box and pairs automatically with your Mac, and it includes a woven USB-C to Lightning Cable that lets you pair and charge by connecting to a USB-C port on your Mac.”
Apple’s website referred to this product as the “Magic Mouse 2,” but as of August 2021, a search on apple.com returned “…the product you’re looking for is no longer available on apple.com.” Thus, Apple apparently renamed the product “Magic Mouse.”
This wireless Multi-Touch mouse was 0.85 inch high, 2.25 inches wide, 4.47 inches deep, and weighed 0.22 pound. It shipped with a Lightning to USB cable for charging. It required a Bluetooth-enabled Mac with OS X 10.11 or later, and also worked on an iPad with iPadOS 13.4 or later.