The Amazing9 Square Keycaps Portable RGB One-handed Numeric Keyboard is a versatile and customizable keyboard designed for use with various devices. Here are its key features in English:

**Features:**

- **Customizable Keys and Hot Swapping:** This keyboard allows for the customization of all keys, with support for macro functions and QMK firmware. It offers four sets of presets that can be switched at any time and supports combined keys, providing a user-friendly experience.

- **Universal Compatibility:** With onboard storage and a built-in chip, this keyboard is compatible with a wide range of devices and software. It can be used with laptops, Macs, MacBooks, Windows PCs, tablets, and desktop computers. Note that this custom keyboard is not compatible with mobile phones. It's driver-free and plug-and-play for convenience.

- **Multi-function:** The keyboard offers a variety of functions, including calculations, lighting control, volume adjustment, music playback, access to local disk, and a calculator. It's suitable for tasks such as financial work, cash register operations, general work, gaming, and streaming.

- **RGB Backlight:** The keyboard features vibrant RGB backlighting with four dynamic lighting effects and seven water lighting effects. It supports 16.8 million color combinations. The keyboard's plexiglass shell and fine sandblasting surface provide a delicate touch, delivering sci-fi-inspired lighting effects while maintaining softness. The brightness of the backlight can be adjusted to suit your preferences.

- **Ergonomics and Portability:** The keyboard is designed with ergonomics in mind, featuring an 8-degree raised bottom to reduce hand fatigue during extended use. It also saves desktop space and is lightweight and portable, making it easy to carry with you.

The Amazing9 Square Keycaps Portable RGB One-handed Numeric Keyboard offers versatility and customization for various computing tasks and devices.

Specifications:

.Color: Transparent Glass Shell (Red Blue Switch)
.Material: Frosted Plexiglass
.Product Dimensions: 6.5 x 6.8 x 2.8cm
.Product Weight: 72g
.Package Dimensions: 12 x 10 x 5cm
.Package Weight: 200g
.Packing: Graphic Carton

Package Content:

.1 x Keyboard
.1 x USB Cable
.1 x User Manual