Keychron K3 wireless keyboard review: compact with compromises The K3 is remarkably thin, but at the cost of versatility Share this story Keychron’s keyboards are an appealing option for anyone looking for a relatively affordable wireless mechanical keyboard. Its latest model is the Keychron K3, which starts at $74. The K3 combines the low-profile design of the K1 with the compact 75 percent layout of the K2. The result is a keyboard with a slim and compact form factor, with a height that sits somewhere between a typical mechanical keyboard and a keyboard with laptop-style switches. It’s a tempting prospect if you’re after a compact, portable board that won’t take up too much space in a laptop bag. The K3 also features several other useful features like hot-swappable switch options that let you completely change the feel of your keyboard without having to do any soldering and cross-compatibility with Windows and Mac. But unless you really want or need a thin keyboard, the K3’s low-profile design comes with compromises that hold the keyboard back from being the perfect choice for everybody.