LOFREE OE919
LOFREE Flow Low Profile Mechanical Keyboard User Manual
Model: OE919
1. Introduction
The LOFREE Flow is a low-profile mechanical keyboard designed for enhanced typing experience and productivity. It features a durable all-aluminum body, innovative Kailh Full POM switches, and versatile connectivity options. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your keyboard.

Image 1.1: Overview of the LOFREE Flow Low Profile Mechanical Keyboard.
Key Features:
- Low Profile and Full POM Switches: Equipped with Kailh Full POM switches for a smooth, self-lubricating typing experience.
- Gasket Design: Provides enhanced cushioning and even pressure distribution for comfortable typing.
- All-Aluminum Body: Offers premium durability and a sleek aesthetic.
- Hot-Swappable Design: Allows for easy customization and replacement of switches.
- RGB Sidelit and Backlit: Features customizable lighting effects for both the sides and under the keycaps.
- PBT Low-profile Keycaps: Utilizes five-sided dye-sublimation for durable and visually appealing key legends.
2. Setup
2.1 Package Contents
Before proceeding, ensure all items are present in the package:
- LOFREE Flow Low Profile Mechanical Keyboard
- USB Cable (USB-C to USB-A)
- User Manual (this document)
2.2 Charging the Keyboard
The keyboard is equipped with a 2000mAh Lithium Polymer battery. For optimal performance, fully charge the keyboard before first use.
- Connect the included USB-C cable to the keyboard's USB-C port.
- Connect the other end of the USB-A cable to a powered USB port on your computer or a USB wall adapter.
- The charging indicator light will illuminate. A full charge typically takes approximately 3 hours.
A full charge provides up to 40 hours of non-stop working time.

Image 2.1: Charging and battery life details for the LOFREE Flow keyboard.
2.3 Connecting the Keyboard
The LOFREE Flow keyboard supports both Bluetooth wireless and USB-C wired connections.
2.3.1 Wired Connection
To use the keyboard in wired mode:
- Ensure the mode switch on the back of the keyboard is set to 'Wired' (usually indicated by a cable icon or 'USB').
- Connect the USB-C cable from the keyboard to your computer's USB port.
- The keyboard will be automatically recognized by your operating system (Windows, Mac OS).
2.3.2 Bluetooth Wireless Connection
The keyboard can connect to up to three Bluetooth devices.
- Ensure the mode switch on the back of the keyboard is set to 'Bluetooth' (usually indicated by a Bluetooth icon).
- On the keyboard, press and hold the Fn key and one of the 1, 2, or 3 keys (e.g., Fn+1) for 3-5 seconds until the corresponding indicator light above the number key flashes rapidly. This indicates the keyboard is in pairing mode for that slot.
- On your computer or device (Laptop, PC, Tablet), navigate to Bluetooth settings.
- Search for available devices and select 'LOFREE Flow' from the list.
- Follow any on-screen prompts to complete the pairing process. The indicator light on the keyboard will stop flashing and remain solid when connected.
- To switch between paired devices, press Fn + 1, Fn + 2, or Fn + 3 briefly.
3. Operating Instructions
3.1 Basic Key Functions
The LOFREE Flow keyboard features a 100-key layout, including a full alphanumeric section, function row, navigation keys, and a numeric keypad.

Image 3.1: Standard layout of the LOFREE Flow Low Profile Mechanical Keyboard.
3.2 Function Keys (Fn Combinations)
The keyboard utilizes the Fn key to access secondary functions printed on the keycaps. Common combinations include:
- Fn + F1-F12: Media controls (play/pause, volume, etc.) and system functions (brightness, search). Refer to the icons on your specific keycaps.
- Fn + Left/Right Arrow: Adjust backlight brightness.
- Fn + Up/Down Arrow: Change backlight effects/modes.
- Fn + Win/Option: Toggle between Windows and Mac OS key layouts.
3.3 Backlight Control
The LOFREE Flow keyboard features RGB sidelit and white backlit effects. Use the Fn key combinations to customize the lighting:
- Brightness Adjustment: Press Fn + Left Arrow to decrease brightness, and Fn + Right Arrow to increase brightness.
- Mode Switching: Press Fn + Up Arrow or Fn + Down Arrow to cycle through various backlight effects and patterns.

Image 3.2: Illustration of RGB sidelit and white backlit features.
3.4 Hot-Swappable Switches
The LOFREE Flow keyboard supports hot-swappable switches, allowing you to change switches without soldering. This enables customization of typing feel.

Image 3.3: Demonstrating the hot-swappable switch feature.
To replace a switch:
- Power off the keyboard or disconnect it from your device.
- Carefully remove the keycap using a keycap puller (not included).
- Use a switch puller (not included) to gently grip the switch and pull it straight up.
- Align the pins of the new switch with the holes on the PCB and press it down firmly until it clicks into place. Ensure the pins are not bent.
- Reattach the keycap.
4. Maintenance
4.1 Cleaning the Keyboard
Regular cleaning helps maintain the keyboard's appearance and functionality.
- Keycaps: Use a soft, damp cloth with mild soap and water to clean keycaps. Ensure they are completely dry before reattaching. For deeper cleaning, keycaps can be removed (refer to Section 3.4).
- Keyboard Body: Wipe the aluminum body with a soft, dry, or slightly damp cloth. Avoid abrasive cleaners or solvents.
- Between Keycaps: Use compressed air to remove dust and debris from between the keycaps and switches.
4.2 Battery Care
- Avoid exposing the keyboard to extreme temperatures.
- If storing the keyboard for an extended period, charge it to approximately 50% to prolong battery life.
5. Troubleshooting
5.1 Connectivity Issues
- Keyboard not connecting via Bluetooth:
- Ensure the keyboard is in Bluetooth mode and pairing mode (Fn + 1/2/3 held until flashing).
- Check your device's Bluetooth settings to ensure Bluetooth is enabled and the keyboard is visible.
- Try unpairing and re-pairing the keyboard on your device.
- Ensure the keyboard battery is sufficiently charged.
- Wired connection not working:
- Ensure the keyboard is in wired mode.
- Try a different USB-C cable or a different USB port on your computer.
- Restart your computer.
5.2 Backlight Issues
- Backlight is dim or off:
- Adjust brightness using Fn + Left/Right Arrow.
- Ensure the keyboard battery is charged, as low battery can affect backlight performance.
- The keyboard may enter a sleep mode to conserve battery, turning off the backlight. Press any key to wake it up.
5.3 Key Functionality Issues
- Keys not responding or feeling sticky:
- Clean around the affected keycap to remove any debris.
- If using hot-swappable switches, try removing and re-inserting the switch, ensuring it is seated correctly.
- Consider replacing the switch if the issue persists (refer to Section 3.4).
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | OE919 |
| Product Dimensions | 14.69 x 4.96 x 1.02 inches |
| Item Weight | 1.25 pounds |
| Manufacturer | LOFREE |
| Batteries | 1 Lithium Polymer battery (included) |
| Connectivity Technology | Bluetooth, USB-C |
| Compatible Devices | Laptop, PC, Tablet |
| Keyboard Description | Mechanical |
| Recommended Uses | Business, Everyday Use, Gaming, Office |
| Special Features | Backlit, Hot-Swappable, Hotkeys and Media Keys, Low-Profile Key, Ultra Slim |
| Keyboard Backlighting | RGB Sidelit, White Backlit |

Image 6.1: The ultra-slim design of the LOFREE Flow keyboard.
7. Warranty and Support
7.1 Warranty Information
For specific warranty details, please refer to the warranty card included with your product or visit the official LOFREE website. Warranty terms typically cover manufacturing defects for a specified period from the date of purchase.
7.2 Customer Support
If you encounter any issues not covered in this manual or require further assistance, please contact LOFREE customer support through their official website or the retailer where the product was purchased. Have your model number (OE919) and proof of purchase ready.
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