Leobog K21

The Leobog K21 Number Pad is a compact, hot-swappable numpad designed for users who want flexible switch customization and multiple connectivity options. It suits office workers or hobbyists who need a dedicated number pad with wireless and wired modes, and prefer the ability to change switches without soldering. Its tactile switches and sound dampening features make it suitable for quieter typing environments.

Key Features

• Hot-swappable PCB supports most 3-pin and 5-pin switches, allowing easy switch replacement without soldering.
• Triple connectivity modes: Bluetooth 5.0, 2.4GHz wireless, and Type-C wired, offering versatility for different setups.
• Anti-ghosting with NKRO ensures all key presses register accurately during fast input.
• Includes software for Windows to customize key functions and settings.

Build Quality and Typing Experience

• PC mounting plate provides a soft, bouncing typing feel compared to metal plates, which may reduce finger fatigue.
• Equipped with EVA foam inside the case to absorb sound and reduce hollow noise, making typing quieter.
• Uses Leobog Icesoul tactile switches with moderate actuation force and pre-lubed stems for smoother keystrokes.

Connectivity

• Bluetooth 5.0 mode is suitable for wireless use with moderate latency, ideal for casual typing.
• 2.4GHz wireless offers a more stable and faster connection, better for low-latency needs.
• Type-C wired mode provides a reliable, no-latency connection and charging simultaneously.

Compatibility

• Compatible with Windows XP and later versions; software customization is Windows-only.
• Supports standard numpad layout with 21 keys, fitting most numeric input workflows.

Trade-offs

• Software support is limited to Windows, excluding macOS and Linux users from customization options.
• PC mounting plate may feel less rigid than metal alternatives, which some users might find less precise.
• Battery capacity is 600mAh, but exact battery life is unknown, which may affect long wireless sessions.