1. Introduction
The Womier SK65 is a 60% compact mechanical gaming keyboard designed for versatility and performance. Featuring a durable CNC aluminum case, gasket mount structure, and hot-swappable switches, it offers a premium typing experience. With triple-mode connectivity (Bluetooth 5.0, 2.4GHz wireless, and USB-C wired), RGB backlighting, and a multimedia knob, the SK65 is compatible with a wide range of devices and operating systems.

Image: Womier SK65 Wireless Mechanical Gaming Keyboard in black, showcasing its compact design and RGB lighting.
Key Features:
- Full CNC Aluminum Case: Provides durability and a premium feel.
- Gasket Mount Design: Enhances typing comfort and sound profile.
- Hot-Swappable Switches: Allows for easy customization of switches.
- Triple-Mode Connection: Supports Bluetooth 5.0, 2.4GHz, and USB-C wired.
- Multimedia Knob: For convenient volume control.
- Customizable RGB Backlighting: South-facing LEDs for vibrant lighting effects.
- 3750mAh Battery: Long-lasting wireless usage.

Image: An infographic highlighting the main features of the Womier SK65, including its CNC aluminum case, gasket mount, hot-swappable switches, and triple-mode connectivity.
2. Unboxing
Upon opening the Womier SK65 package, please verify that all components are present and in good condition. The standard package contents are as follows:
- 1 x Womier SK65 Keyboard
- 1 x USB-A to USB-C Cable
- 1 x 2-in-1 Keycap & Switch Puller
- Additional Keycaps (quantity may vary)
- 1 x User Manual (this document)
- 1 x Quick Guide

Image: A flat lay showing the Womier SK65 keyboard, USB-C cable, keycap/switch puller, and documentation included in the box.
3. Setup
3.1. Charging the Keyboard
Before first use, it is recommended to fully charge the keyboard. Connect the provided USB-A to USB-C cable to the keyboard's USB-C port and the other end to a USB power source (e.g., computer USB port, wall adapter). The keyboard features a 3750mAh battery and takes approximately 6-8 hours for a full charge, providing over 200 hours of usage.

Image: The Womier SK65 keyboard with icons indicating fast charging (6-8 hours), high capacity (3750mAh), and long-lasting (200+ hours) battery life.
3.2. Connection Modes
The SK65 supports three connection modes: USB-C wired, 2.4GHz wireless, and Bluetooth 5.0. To switch between modes, use the physical switch located under the TAB keycap. Gently remove the TAB keycap to access the switch.

Image: An illustration demonstrating the three connection methods: USB-C wired, 2.4GHz wireless, and Bluetooth, showing the keyboard connected to a PC, tablet, and smartphone.
3.2.1. USB-C Wired Connection
- Connect the USB-C cable to the keyboard and your computer.
- Ensure the physical switch under the TAB key is set to 'Wired' mode.
- The keyboard will be recognized automatically by your system.
- For some systems, you may need to press Fn + TAB to activate wired mode.
3.2.2. 2.4GHz Wireless Connection
- Locate the 2.4GHz USB receiver (usually stored in a compartment on the keyboard or included separately).
- Plug the USB receiver into an available USB port on your computer.
- Ensure the physical switch under the TAB key is set to '2.4GHz' mode.
- The keyboard should connect automatically. If not, press Fn + R to initiate pairing.
3.2.3. Bluetooth Connection
- Ensure the physical switch under the TAB key is set to 'Bluetooth' mode.
- Press and hold Fn + Q, Fn + W, or Fn + E for 3-5 seconds to enter pairing mode for Bluetooth device 1, 2, or 3 respectively. The corresponding key's backlight will flash rapidly.
- On your device (PC, laptop, tablet, phone), enable Bluetooth and search for new devices.
- Select 'Womier SK65' from the list of available devices to complete the pairing process.
- To switch between paired Bluetooth devices, simply press Fn + Q, Fn + W, or Fn + E.
3.3. Operating System Compatibility
The Womier SK65 is compatible with both Windows OS (including Windows XP, Win7, Win8, Win10) and macOS. To switch between Windows and Mac layouts, press Fn + A for Windows or Fn + S for macOS.
4. Operating the Keyboard
4.1. Multimedia Knob Functions
The dedicated multimedia knob located on the top right of the keyboard provides quick access to audio controls:
- Rotate clockwise: Increase volume.
- Rotate counter-clockwise: Decrease volume.
- Press down: Mute/unmute audio.

Image: A close-up view of the multimedia knob, illustrating its functions for volume control and muting.
4.2. RGB Backlight Control
The SK65 features customizable RGB backlighting with multiple effects. Use the following Fn key combinations to control the lighting:
- Fn + |: Switch between different lighting effects.
- Fn + ]}: Adjust the lighting color.
- Fn + ↓ / ↑: Adjust the lighting brightness.
- Fn + ← / →: Adjust the lighting speed.
- Fn + WIN: Lock/unlock the Windows key.
- Fn + Space: Turn on/off the backlight.

Image: The Womier SK65 keyboard displaying its RGB backlighting, with a diagram showing the Fn key combinations for adjusting effects, colors, brightness, and speed.
4.3. Programming Software
The SK65 supports programmable software to customize key assignments, macros, and lighting effects. Please refer to the official COSTOM website or the included Quick Guide for instructions on downloading and using the software.

Image: A screenshot of the Womier keyboard software interface, demonstrating options for customizing backlight modes, key remapping, and macros.
5. Maintenance
5.1. Cleaning the Keyboard
To maintain the keyboard's appearance and functionality, regularly clean it using a soft, lint-free cloth. For deeper cleaning, you may use a can of compressed air to remove dust and debris from between the keycaps. Avoid using harsh chemicals or abrasive materials.
5.2. Hot-Swapping Switches and Keycaps
The Womier SK65 features a hot-swappable PCB, allowing you to easily change mechanical switches without soldering. It supports 3-pin and 5-pin mechanical switches. The included 2-in-1 key puller simplifies the process of removing both keycaps and switches.

Image: The Womier SK65 keyboard with several keycaps and switches removed, demonstrating its hot-swappable capability. A 2-in-1 keycap and switch puller is also shown.
5.2.1. Removing Keycaps:
- Use the keycap puller to gently grip the keycap you wish to remove.
- Pull straight up with even pressure until the keycap detaches from the switch stem.
5.2.2. Removing Switches:
- After removing the keycap, use the switch puller to grasp the top and bottom clips of the switch.
- Apply gentle pressure to compress the clips and pull the switch straight up from the PCB.
5.2.3. Installing Switches:
- Align the pins of the new switch with the holes on the PCB. Ensure the pins are straight.
- Gently push the switch down until it clicks into place. Do not force it, as bent pins can damage the PCB.
5.2.4. Installing Keycaps:
- Align the keycap with the switch stem.
- Press down firmly until the keycap is securely seated.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Keyboard not responding (Wired) | Loose cable connection, incorrect mode, driver issue. | Ensure USB-C cable is securely connected. Verify physical switch is in 'Wired' mode. Try a different USB port or cable. Reinstall keyboard drivers if necessary. Press Fn + TAB. |
| Keyboard not responding (Wireless 2.4GHz) | USB receiver not plugged in, incorrect mode, low battery. | Ensure 2.4GHz USB receiver is plugged in. Verify physical switch is in '2.4GHz' mode. Charge the keyboard. Press Fn + R to re-pair. |
| Keyboard not connecting (Bluetooth) | Incorrect mode, not in pairing mode, device Bluetooth off, low battery. | Ensure physical switch is in 'Bluetooth' mode. Press and hold Fn + Q/W/E to enter pairing mode. Ensure Bluetooth is enabled on your device. Charge the keyboard. Remove previous pairings on your device and try again. |
| RGB backlight not working or stuck | Backlight off, software glitch. | Press Fn + Space to toggle backlight. Try cycling through effects with Fn + |. Restart the keyboard. Use the programming software to reset lighting settings. |
| Keys not registering or double-typing | Faulty switch, debris under switch, software issue. | Carefully remove the keycap and switch. Inspect for debris and clean. Reinstall the switch firmly. If problem persists, replace the switch. Update keyboard firmware if available. |
| Multimedia knob not functioning | Software conflict, physical obstruction. | Ensure no other software is interfering with media controls. Check for any physical obstruction around the knob. Restart the keyboard. |
7. Specifications
| Feature | Detail |
|---|---|
| Model | SK65 |
| Layout | 60% (65 keys) |
| Case Material | CNC Aluminum |
| Mounting Style | Gasket Mount |
| Connectivity | Bluetooth 5.0, 2.4GHz Wireless, USB-C Wired |
| Battery Capacity | 3750mAh Lithium Polymer |
| Backlighting | South-facing RGB |
| Switches | Womier Custom Linear Switches (Full POM, Factory-lubed) |
| Keycaps | Double-Shot PBT Keycaps (Cherry Profile) |
| Compatibility | Windows XP/7/8/10, macOS, PC, Laptop, Tablet, Phone, Switch, Xbox, PlayStation |
| Product Dimensions | 12.4 x 4.45 x 1.81 inches (31.6 x 11.3 x 4.6 cm) |
| Item Weight | 3.36 pounds |

Image: A technical drawing of the Womier SK65 keyboard with its dimensions labeled in both inches and centimeters.
8. Warranty and Support
8.1. Warranty Information
The Womier SK65 keyboard comes with a 365-day warranty from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use. Please retain your proof of purchase for warranty claims.
8.2. Customer Service & Technical Support
For any quality-related issues, technical assistance, or inquiries, please contact our customer service team. We offer 24/7 online support to address your concerns promptly.
Contact Information:
- Refer to your product packaging or the official COSTOM website for the most up-to-date contact details.
- Online support is available through the COSTOM brand store on Amazon: Visit the COSTOM Store
Important Reminder: Please carefully check if all accessories are intact inside the box after receiving the goods. If there are any missing parts, please contact us as soon as possible.

