Features: nn--Dual Modes, Reliable Free: Equipped with an upgraded chip, every keystroke is instantly registered and stable wireless connection offers you real freely typing experience. Easily 3 different devices switchable with FN Q/W/E in wireless mode will hype you up and maximize your productivity.n--65% Layout, Compact Practical: What makes the 68 keys different from the 61/71 keys, it's RK68 boasts both practical and compact features, while retaining minimalist layout and it also geared with arrow keys and frequently used control keys.n--Hot-swappable Quiet Red: Hot-swap PCB allows you to replace 3 pins/5 pins switches freely without soldering issue. Enjoy the fun of making your own unique keyboard. Red switch features a quiet and linear typing experience. The soft, top-to-bottom feedback offers easier and smoother use than other tactile switches. Perfect for people who work in an open office and stay up gamers.n--DIY Software Supports & 1450mAh Battery: DIY keybindi.