Keychron K3 Bluetooth Mechanical Keyboard User Guide

: June 6, 2024
: Keychron

Table of Contents

IN THE BOX:
Quick Start Guide
K3 BLUETOOTH MECHANICAL KEYBOARD SPECIFICATIONS
K3 BLUETOOTH MECHANICAL KEYBOARD OVERVIEW
LED STATUS OVERVIEW
FUNCTION DESCRIPTION: CHARGING
BLUETOOTH/WIRED MODE (TOGGLE SWITCH) WIRED MODE
BLUETOOTH MODE
TROUBLESHOOTING
VIDEO
FAQs
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

K3 Bluetooth Mechanical Keyboard

IN THE BOX:

Keychron K3 Bluetooth Mechanical Keyboard x 1
Type—C Cable 1
Manual 1
Quick Start Guide 1
Extra Keycaps Set 1

Quick Start Guide

If you are a Windows user, please find the appropriate keycaps in the box, then follow the instructions below to find and replace the following keycaps.

Mac / Windows

Connect Bluetooth
Connect Cable
Charge Light effect
Switch between function and multimedia keys (F1-F12)
Disable Autio Sleep Mode.
Remap Keys
Turn Off the Backlight.
Factory Reset

K3 BLUETOOTH MECHANICAL KEYBOARD SPECIFICATIONS

Number of keys: 84
Switch type: Mechanical / Optical Switch
Battery: 1550mAh
Charging time: Around 3 hours
Charging port: USB Type-C
Mode: Bluetooth/Wired
Bluetooth operating distance: Within 10 meters (open space)
Name of Bluetooth device: Keychron K3
Operating Environment -10 to 50°c
Technical specifications can be subjected to change without notice we apologize for any inconvenience caused

K3 BLUETOOTH MECHANICAL KEYBOARD OVERVIEW

LED STATUS OVERVIEW

LED Location| Function|

Status

---|---|---
Battery indicator| Charging| Low battery – Blinking Red
Charging – Static Red
Fully charged – Static Green
Bluetooth indicator| Bluetooth| Pairing – Fast Blinking
Paired – Light Off
Switching – Slow Blinking

FUNCTION DESCRIPTION: CHARGING

Plug the cable into a USB port and plug the other end into the keyboard port. Charging Indicator: When the battery is below 15%, a red battery blinking indicator will be triggered. A red light will stay on while charging; Fully charged in around 3 hours, a green battery indicator will appear.

The Keychain keyboard is compatible with all USB ports. Please use a 5V 1A adapter or USB 3.0 for the best performance. The Keychain K3 can be charged in Bluetooth/on/off mode.
” This product supports up to 5V charging voltage and 1A charging current. We are not responsible for any problems caused by improper charging.

BLUETOOTH/WIRED MODE (TOGGLE SWITCH) WIRED MODE

Switch the toggle switch to the Cable option (it only works when a USB cable is plugged in).
Connect our cable with your PC and keyboard.
Backlit will be turned on. *Under Wired Mode, the keyboard will not enter into Battery Saver Mode.

BLUETOOTH MODE

Switch the keyboard to the Bluetooth option.
The Backlit will be turned on.
Hold the “Fn+1” key for 4 seconds to activate Bluetooth pairing (the Bluetooth indicator fast flashes for 3 minutes to detect pairing.
Search for the Bluetooth device “Keychron K3” on your device and connect it (the Bluetooth indicator goes off after successful pairing).
Note: This keyboard supports pairing up to 3 devices simultaneously via combination key “fn” + “1” rfn” + “2” / “fn” + “3”.
‘The Bluetooth indicator will continue to flash for 3 minutes.
“Slow or failed connections may exist due to different Bluetooth versions, please make sure all the settings are correct.

SWITCH BLUETOOTH DEVICES

Short press combination key”fn” + “1” / “fn” + “2” / “fn” + “3” to switch to other device.

RECONNECT:

Switch the keyboard to the Bluetooth option to activate the keyboard (the keyboard will connect to the last connected device by default).
The Bluetooth indicator flashes for 4 seconds and automatically pairs with the last paired device.
If the Bluetooth indicator is off, press any button to enter the connection again.

The keyboard must have been paired with the device to perform this function.

TURN OFF THE KEYBOARD
Switch to “Off”

BATTERY SAVER
Under Bluetooth mode, the keyboard backlight turns off when it is inactive for 10 minutes.
Tap any button to wake the keyboard. I want to disable this auto battery save mode, press fn+S+O for 4 seconds.
Then if want to enter this power save mode again, press fn+S+O for 4 seconds.

BACKLIT SETTING

• Short press fl to switch between different types of lighting effects.
• When backlit is on, press the button to switch among them. Short press fn and left arrow” or In and “right arrow” to adjust light colors. (For RGB version only)

OS SWITCH
1- MAC/iOS
Turn the switch to Mac/iOS when you are connected to a Mac or iOS operating system.

2—WINDOWS/ANDROID
Switch the toggle to Windows/Android when the keyboard is connected to a Windows or Android operating system.
When using the Windows/Android mode, min keys are used for “Windows” and “Alt” functions.
3—INPUT METHOD SWITCH
For iOS: Input method switch: Ctrl + Space Caps Lock: Caps (Enable General>Keyboards>Hardware Keyboard>Caps Lock Language Switch)

For Android:
Input method switch: Shift + Space

NOTE: Functions of the certain multimedia keys may be disabled due to compatibility, versions, brands, and drivers of Windows/Android OS. We also recommend not to switch OS frequently as it may impact keyboard operations.

TROUBLESHOOTING

If unable to pair the keyboard to the device, confirm that the device you’re trying to pair with is Bluetooth-capable. If so, restart the device and try pairing it with the keyboard again.
Note: On a Windows computer, a new Bluetooth connection will sometimes require additional software updates
—a process that may still be ongoing after a message appears indicating successful completion. Wait at least 20 minutes after pairing to make sure all updates are completed before restarting the computer.
Confirm that the device is configured to accept Bluetooth connections (Windows) and supports an external keyboard (HID profile).
Go to Bluetooth Devices > Open Settings and select the following:
Allow Bluetooth devices to find this computer
Allow Bluetooth devices to connect to this computer
Alert me when a Bluetooth device wants to connect

My keyboard isn’t working.
For the keyboard: Turn the keyboard off and back on. Turn Bluetooth off and restart the computer. (Windows) For the device: Go to Bluetooth settings and turn off Bluetooth and “forget” the keyboard. Restart the device and turn on Bluetooth to reconnect.

Bluetooth connection is interrupted even within 10 meters.
Check if the keyboard is resting on a metal surface that can interfere with the Bluetooth signal.
Third-party input tools are not compatible with the keyboard. Due to compatibility, versions, brands, and drivers of Windows/Android OS, functions of third-party input tools may be affected while using the keyboard. Please make sure your operating system and drivers are up to date.

Certain fn keys or multimedia keys do not work under Windows/Android mode.
Functions of certain multimedia keys may be disabled due to compatibility, versions, brands, and drivers of Windows/Android OS.

VIDEO

FAQs

What is the difference between K3 and K3s?

The major difference between K3 and K3s is the keycaps. While K3s uses PBT double-shot keycaps, K3 uses ABS keycaps.

What is the difference between K3 and K3r?

The major difference between K3 and K3r is that the former uses Bluetooth while the latter uses wired connection.

What is the difference between K3 and K3r with RGB backlit?

The major difference between K3 and K3r with RGB backlit is that the former uses Bluetooth while the latter uses wired connection.

How to switch function keys to multimedia keys (F1-F12)?

Please press FN + F1-F12 to switch between function keys and multimedia keys (F1-F12).

How to disable Auto Sleep mode?

Please press FN + ESC to disable Auto Sleep mode.

How to remap keys?

Please press FN + INS or DEL to remap keys.

How to turn off backlight?

Please press FN + Backspace to turn off backlight.

How to factory reset?

Press FN + R for 3 seconds, then release it, you will hear a sound of “ding”, it means factory reset has been completed.

what is the key between F12 and delete?

There is no key between the F12 and delete keys

Does it have a caps lock indicator light? Thanks

Yes on the caps key stay lit

This one comes with the mechanical brown switches?

My was with red. But there should be brown version available as well.

Is k3 for fps gaming ? And which switch is fastest?

There is no key between the F12 and delete keys

does it work on Linux Bluetooth mode? (if not works plugged in?)

Yes it does work both plugged and unplugged (via Bluetooth) currently using it in Fedora 35. It even displays low battery warnings in GNOME shell.

Is there a ptr sc key ? If not, can any of yhr function keys be mapped to to thr print sc key ?

Hi, the key to the left of the delete and to the right of f12 is for printscreen.

what’s the battery capacity of the slim version keyboard?

The battery capacity is 1550 mAh and with backlighting of the keyboard active, the battery life is 32-34 hours.

Safety Precaution:
Keep the product, accessories, and packaging parts out of reach of choking hazards. Always keep the product dry to avoid corrosion.
Do not expose the product to extreme temperatures below -10°C to preserve the lifespan of the keyboard and battery.

Keychron, Inc. Dover, DE 19901, United States
Find us at: https://www.keychron.com
Support@keychron.com
@keychron
@keychron
**** @keychronMK
Designed by Keychron Made in China.

This device complies with Part 15 of the FCC Rules. Operation Is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Pan 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used In accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user Is encouraged to try to correct the interference by one or more of the following measures:

—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver Is connected.
— Consult the dealer or an experienced radio/TV technician for help.

This device and its antenna(s) must not be co-located or operated in conjunction with any other antenna or transmitter.
Radiation Exposure Statement
The device has been evaluated to meet general RF exposure requirements. in portable exposure conditions without restriction.