If you want a quality wireless keyboard that’s compatible with multiple operating systems, you don’t have a ton of options. A few weeks ago, we reviewed one of those options: theKeychron K2。这个紧凑的无键键板异常坚固，内部铝制框架和Clicky Gateron蓝色开关。它设计用于多个设备，并且可以同时连接到三个设备。它与Windows，Mac和Linux/Android机器兼容，因此您可以将其与市场上的任何设备一起使用。也就是说，这是无十分的，如果您经常使用数字垫，这是一个不良的选择。
The K2 (and the similar K1) were Keychron’s first offerings, both of them launched via successful Kickstarter campaigns. When both of those keyboards became popular, Keychron began receiving requests for a keyboard with a number pad. The K4, currently available for pre-order on Kickstarter, is Keychron’s answer to those requests.
K4实际上并不是一个单一keyboard. It’s a family of keyboards, with several different options available. That said, the “guts” of the keyboard are similar across different variants. When there are differences, we’ll make sure to explain all the options. Now, let’s take a closer look!
Overall Design
The K4 is a mid-sized keyboard that’s a compromise between a compact tenkeyless keyboard and a full-sized board. All 100 keys are packed into a solid grid, without any dead space or separation between different groups of keys. The only keys that we noticed are missing are “print screen,” “pause/break,” and “scroll lock”. That’s two keys that we haven’t used since the mid-90s, and another that we don’t think anyone has ever used in the history of computing. So, for all intents and purposes, you’re getting a fully-functional keyboard.
尽管布局拥挤，但键易于阅读和定位。字母数字键和NUM PAD都是纯灰色，而功能键，箭头和其他键的颜色为棕褐色。逃生键是明亮的橙色，在左上角增加了颜色。
There are two different choices for backlights: plain white and RGB. The RGB backlight uses 18 separate LEDs, which can be programmed to 15 different presets. At this time, there’s no option for customizing them, but 15 choices should be just fine for most people. At the end of the day, this is purely a cosmetic feature, but it’s become standard on mechanical and gaming keyboards.
框架有两种品种：飞机级铝和ABS塑料。铝制框架越来越大，但两侧只有大约一厘米。但是，重量明显重927克（2.04磅），而ABS塑料变体重761克（1.67磅）。除此之外，这只是价格和偏好问题。如果您愿意为更耐用的框架支付几美元，请购买铝。如果塑料足够好，请选择塑料框架。
By default, the keyboard is laid out for Windows users, with a Windows Start Menu button and function keys. However, the package comes with Mac and Command keycaps that can easily be swapped in if you want your Mac keyboard to look like a Mac keyboard.
在底部，您会发现一双可以扩展的橡胶脚，以将键盘的表面放在舒适的8度斜坡上。大多数人会发现这是最舒适的打字角度，但是如果您喜欢平坦的键盘，也可以使脚倒塌。
Keycaps & Switches
K4的钥匙扣由DoubleShot ABS塑料构建。这比标准ABS键更耐用，并且将比任何开关或其他组件的使用寿命更长。也就是说，随着时间的流逝，ABS钥匙扣会变得有光泽，并产生光泽。有些人不在乎这一点，但是对于另一些人来说，这可能是一个破坏交易的人，因此绝对值得一提。
For switches, you get several different choices, but they fall into two broad categories: optical and mechanical. Here’s a closer look at both categories.
Optical switches:
The K4’s optical switches are the same switches used in Razer’s iconic Huntsman series of gaming keyboards. But while the Huntsman series is very expensive, Keychron managed to get those same switches into a reasonably-priced package.
There are two different options: red and blue. The red switches are relatively quiet, and are well-suited for use in an office environment. They also offer a relatively light touch, requiring only 40 grams of force to press. If you prefer a clickier feel, the blue switches are a bit stiffer, requiring 50 grams of force to actuate. That said, they’re fairly loud, so you won’t want to use them if you work in a cubicle or an office pool.
机械开关：
另外，您可以使用四个不同的Gateron开关中的任何一个订购K4。就质量而言，与樱桃MX相比，这些开关通常是相比的。虽然它们确实耐用，但在功能方面并不相同。因此，例如，Gateron红色的规格不会像樱桃MX红色相同。也就是说，它们的评分为5000万键，因此您可以使用此键盘多年，而不会失去敏感性。
The four choices are Blue, Brown, Red, and Yellow. The Blue switches are stiff and clicky, and require 60 grams of force to depress. They’re also loud, though. The Brown and Yellow switches are nearly identical, requiring 55 and 50 grams of force respectively. Both of these are considered “medium” switches, and they produce a moderate amount of noise. The Red switches are the lightest, with only 45 grams of pressure needed to actuate. They’re also the quietest, ideal for office environments.
If you prefer the softer feel of Topre switches, read ourFujitsu Realforce R2评论。这些开关很受欢迎，因为您可以使用软件调整旅行距离，因此您将具有真正的定制触摸。此外，Realforce R2具有PBT钥匙扣，它们非常耐用，并且不会随着时间的推移而产生光泽的光洁度。也就是说，这有点贵，但是您得到了所支付的费用。
Features & Extras
The Keychron K4 can be operated either via Bluetooth or by USB-C. If you don’t want to worry about batteries, you can simply leave it plugged in, but the Bluetooth connection is great for travel or for connecting to multiple devices. All in all, you can connect to three different devices simultaneously. By using the function and number keys, you can switch between different devices. If you use one computer for code and another for emails, you can switch back and forth with ease. While you’re at it, you can also connect to your smartphone, so you can respond to texts and other communication without having to take your fingers off the keyboard.
The K4 uses an internal, 4,000 mAh battery pack, which means you won’t have to mess around with AAs. It holds enough charge for about four weeks, provided you turn your backlights off when the keyboard is not in use. Obviously, this usage time will vary considerably depending on how much time you actually spend typing. When it comes time to recharge, the USB charger supports the very fastest USB power currently available, at 5V 2A. From a dead battery, you can fully recharge in only three hours. That’s not bad, particularly since you can use the keyboard while it’s plugged in.
该键盘具有N-钥匙翻转和防孔。这意味着您可以同时按无限数量的键，并且所有击键都将注册。如果您习惯于快速达到一系列快捷方式组合，这将是一个很棒的功能。但是，在游戏方面确实会闪耀。如果您使用了很多宏，则不必担心拒绝注册的键盘。
与KeyChron的其他产品一样，K4与Windows，Mac和Android设备兼容。无论您的操作系统是什么，您都将具有即时插头和播放功能。
如果你正在寻找一个专用的游戏键盘,theCorsair K57should be right up your alley. It’s an oversized keyboard, with a row of six programmable macro buttons on the left side. In addition, there’s a row of dedicated media keys above the top of the num pad, so you won’t have to use shortcuts. The large size is not ideal for travel, but it’s a fantastic choice if you have a stationary gaming PC.
技术规格
在总结之前，这里是KeyChron K4的快速，自上而下的概述。如果两种不同的构建之间存在差异，我们确保注意这些差异是什么。
- Bluetooth or USB hybrid 100-key keyboard
- 您选择的光学开关或Gateron蓝色，红色，棕色或黄色机械开关
- DoubleShot ABS钥匙扣
- Available with both aircraft-grade aluminum and ABS plastic cases
- 4,000 mAh电池
- Can connect to three devices simultaneously
- Compatible with Windows, Mac, and Linux
- Interchangeable Windows and Mac keycaps
- N-key rollover and anti-ghosting
- White or RGB backlights
- 包括USB-C电缆
- 尺寸为376mm宽x 129mm高x 38mm厚（铝制框架）或371mm x 124mm x 38mm（塑料框架）
- Weighs 927g (aluminum frame) or 761g (plastic frame)
Final Verdict
So, what’s our final verdict on the Keychron K4?
We think it’s a solid choice, whether for typing, gaming, programming, or a variety of purposes. Honestly, there are so many options and variations, it’s hard to think of anything that the K4 isn’t good for. But the main attraction is the mid-sized design. Many compact keyboards are tenkeyless, which makes them ill-suited for accountants, programmers, and anyone who needs to type a lot of numbers quickly. By fitting a num pad into a relatively compact layout, Keychron has solved this problem efficiently.
我们赞赏的另一件事是能够连接到多个设备的能力。如果您可以执行大量多任务处理，这是一个很棒的功能，因为您可以在多台计算机上工作而无需连接多个键盘。亚洲官方合作伙伴尽管它们只是化妆品的功能，但RGB背光还是吸引人的。
