Keychron B6 Pro Ultra-Thin Full-Size Wireless Keyboard - Long Battery

In this review of the Keychron B6 Pro Ultra-Thin Wireless Keyboard, the bottom line is simple: this is a full-size, low-profile board for users who want long battery life and flexible connectivity without bulk. The reviewer found the B6 Pro particularly appealing for people who switch between devices and operating systems, because it offers 2.4 GHz, Bluetooth 5.2 and wired modes along with a Mac-friendly layout. The single biggest reason to buy is its combination of an ultra-slim profile and up to 1200 hour battery life, which keeps it in use for months between charges.

Key Features

• Ultra-slim full-size design: The keyboard delivers a low-profile, full-size layout with a numeric keypad for comfortable typing without the bulk of heavier mechanical boards.
• Long battery life: Up to 1200 hours of continuous use translates to roughly eight months at five hours per day, reducing the need for frequent charging.
• Multiple connection modes: Switch between 2.4 GHz wireless with a 1000 Hz polling rate, Bluetooth 5.2, or a wired connection for reliable performance across devices.
• Customizable key mapping: Use the Keychron Launcher web app or open-source ZMK firmware to remap keys and create macros on macOS, Windows, or Linux for a tailored workflow.
• Cross-platform compatibility: A Mac layout is provided while maintaining full compatibility with Windows and Linux, keeping multimedia and function key behavior consistent for Mac users.

Who It's For

The B6 Pro is a good fit for professionals and students who need a full-size keyboard with a numeric keypad and spend long stretches typing away from a charger. Remote workers who pair multiple devices will appreciate the easy switching between 2.4 GHz, Bluetooth 5.2 and wired modes and the tidy cable-free setup enabled by the fast polling rate.

Users who prefer heavy, high-travel mechanical switches or who need dedicated per-key RGB lighting should look elsewhere; the B6 Pro targets a quiet, ultra-thin typing experience and battery efficiency rather than loud mechanical feedback or elaborate lighting effects.

Pros & Cons

Pros

• Excellent battery endurance that supports extended unplugged use.
• Versatile connectivity with 2.4 GHz, Bluetooth 5.2 and wired options for multi-device workflows.
• Easy key remapping via the web-based launcher or ZMK firmware for advanced customization.
• Mac-friendly layout that still works smoothly on Windows and Linux systems.

Cons

• Some users report mixed experiences with specific keys and typing speed, indicating occasional functional inconsistencies.
• The ultra-thin profile may not satisfy those seeking traditional high-travel mechanical keyfeel.

Specifications

Form factor	Full-size with numeric keypad
Profile	Ultra-slim / lightweight
Battery life	Up to 1200 hours continuous
Wireless	2.4 GHz (1000 Hz polling) and Bluetooth 5.2
Wired mode	USB wired connection supported
Customization	Keychron Launcher web app and ZMK firmware remapping
OS compatibility	macOS, Windows, Linux

Our Verdict

The Keychron B6 Pro is a compelling choice for anyone who needs a full-size, ultra-thin keyboard with exceptional battery life and flexible connectivity. It offers strong value for multi-device use and power users who want to remap keys, while remaining a practical pick for Mac and Windows environments. Those who prioritize deep mechanical feel or advanced lighting should consider alternatives, but for quiet, efficient daily typing the B6 Pro is hard to beat.

Frequently Asked Questions

How long does the battery last in real use?
The keyboard can reach up to 1200 hours of continuous use, which Keychron estimates as about eight months at five hours of use per day.

Can I remap keys on macOS and Windows?
Yes. Remapping is supported via the Keychron Launcher web app and with open-source ZMK firmware on macOS, Windows, and Linux.

What connection options are available?
The B6 Pro supports 2.4 GHz wireless with a 1000 Hz polling rate, Bluetooth 5.2 for multi-device switching, and a wired USB connection.