The Keychron K5 Rgb/Black K5X-H1 is a cutting-edge wireless mechanical keyboard that delivers a full-size, low-profile typing experience. This premium device is engineered for versatility and durability, making it an ideal choice for both professionals and gamers alike.

Featuring 104 keys with low-profile mechanical switches, including Gateron or Keychron Optical options, this keyboard is crafted from an aircraft-grade aluminum body that enhances its premium feel. The connectivity options are impressive – supporting both Bluetooth 5.1 and USB Type-C wired connections. This allows seamless multitasking with up to three devices, ensuring your workflow is smooth and efficient.

One of the standout features is the remarkable 4-level RGB backlighting system. With 18 different lighting effects, users can easily customize the keyboard to fit their mood or setup. Additionally, it is compatible with various operating systems including Windows, Android, Mac, and iOS.

• Polling rate: 1000 Hz (wired), 90 Hz (wireless)
• Battery: 2000mAh rechargeable Li-polymer
• Usage: Up to 90 hours (backlight off), 30 hours (backlight at lowest brightness)

In terms of physical dimensions, the keyboard measures 435 mm x 120 mm and weighs approximately 770 grams. It features a height variation from 17 mm (front) to 22 mm (rear), providing an ergonomic tilt and a slim profile that is suitable for desktop setups. Designed to perform reliably in a temperature range of -10 to 50℃, it proves to be robust in various conditions.

The package includes everything you need to get started, including the keyboard, a USB-A to Type-C charging/data cable, a keycap puller, and a user manual.

In summary, the Keychron K5 Rgb/Black K5X-H1 merges mechanical precision, wireless flexibility, and customizable lighting in a sleek design, making it a perfect choice for any user.