Product details

A compact 75% keyboard in an aluminum case, with a multi-function knob and hot-swappable switches — built around a foam stack that gives it a full, satisfying sound without the premium price tag. Available wired-only or in tri-mode Pro trim with wireless and Bluetooth, barebone or fully built.

Hi75C in the astronaut colorway: white case, cream and grey keycaps with yellow accents, rotary knob in the top-right corner

Feature Overview

  • Five-layer dampening A deep, consistent “thocky” sound out of the box
  • Full hot-swap PCB 3-pin and 5-pin switches, no soldering required
  • 75% layout Full function row and arrows, without the wasted desk space
  • Rotary knob Mode-dependent controls and RGB effect cycling
  • Tri-mode Pro connectivity 2.4GHz wireless, Bluetooth, and wired, across 4 devices
  • 1000Hz polling, full NKRO Accurate, missed-input-free response
Angled close-up of the Hi75C case and keycaps, yellow LEOBOG spacebar in front

Sound & Acoustics

The sound comes from what's stacked inside the case. PO foam, an IXPE switch pad, PO bottom foam, a PET bottom pad, and a Gasket Soft-Elastic Structure work together to cut the hollow ping that cheaper boards are known for. The result is a deeper, more consistent tone across the board — without needing any aftermarket mods.

Hot-Swap & Switches

Every one of the 81 keys sits on its own dedicated slot on a 1.2mm PCB, so no switch shares a connection point with its neighbor — keystrokes feel consistent whether you're hitting the center of the board or a corner key. Sockets accept both 3-pin and 5-pin switches, so swapping feel is just pull and replace — no iron, no desoldering. Stock kits ship with LEOBOG's own Turquoise or Star Arrow linears, rated for roughly 60 million presses, with select pre-built colorways offering Seiya, Glazed, or Strawberry Mint instead.

Macro shot of the yellow UFO Esc keycap and engraved metal astronaut keycap
Front view of the Hi75C's 81-key 75% layout: full function row, arrow cluster, and rotary knob, no numpad

75% Layout

You keep the full function row and arrow cluster, lose the numpad, and get back some desk space. Everything you use day to day, minus the block of keys most people never touch.

The Knob

One knob, two modes. In Office mode it's volume and mute. Switch to Game mode and the same knob controls RGB brightness, with a click stepping through all 17 lighting effects. Backlit builds run south-facing LEDs across 16 million colors with 10 music-reactive modes; non-backlit kits skip the lighting layer and stay in Office mode only.

Close-up of the Hi75C's knurled rotary knob above the navigation cluster
Four Hi75C builds side by side in different case and keycap combinations

Specifications

Hi75C Series - 81-Key Hot-Swappable Custom Keyboard
Layout 75% Layout - 81 Key Arrangement
Model Name Hi75C Hi75CPro
Keycap Process / Original Height
PBT
Tri-color
/ OEM PBT
Gradient Side-engraved
Original Height
PBT
Tri-color
Original Height
PBT
Topographic
Product Image White White / Black Mountain Rain White White / Black / Racing Yellow
Grape Purple / Sky Blue
Vanilla Ice Blackberry Pink Baileys Sweet Black Topographic
Connection Method Wired Tri-mode Connection (2.4G / Wired / Bluetooth)
Switch / Star Arrow Switch / Star Arrow Switch Turquoise Switch
Stabilizer LEOBOG Custom Fine-tuned Stabilizer
Main Lighting / RGB Full Color
Structure Hardcore GASKET Structure
Positioning Plate PP Positioning Plate FR4 Positioning Plate
Internal Filling PO Cotton + IXPE Switch Pad + PET Pad + Single-Key Slotted PCB + PO Cotton + PET Bottom Pad
Driver LEOBOG Fully Self-developed Client Driver
(Supports Windows system by default)
Battery Capacity / 4000mAh Large Battery
Supported Systems Windows / MacOS / Linux / Android
Inside the box

- 1× HI75C Aluminum Case / Pre-built keyboard
- 1× Hot-swappable PCB
- 1× Steel Plate
- 1× USB Type-C Cable
- 1× Set of Gasket Mounting Silicone Pads
- 1× User Manual (with warranty/QC card)
- 1x Quick Start guide
- 1x Dust Cover

Pre-assembled:
- 2x spare switches
- 1× 2-in-1 switch/keycap puller

Compatibility

Compatible with most MX-style mechanical switches

Supports standard 75% layout keycap sets

Works with Windows, macOS, and Linux

Warranty

1-year manufacturer's warranty

Got questions? 🤔

Do you have any questions, or unsure if this product is compatible with your setup?