AJAZZ K685T
Ajazz K685T Mechanical Keyboard User Manual
Model: K685T
Product Overview
The Ajazz K685T is a compact 68-key mechanical keyboard designed for versatility and performance. It supports three connection modes: Bluetooth, 2.4G wireless, and USB wired, allowing seamless switching between multiple devices. The keyboard features hot-swappable switches, enabling users to customize their typing experience without soldering. It also boasts vibrant RGB backlighting with 18 different effects and a long-lasting built-in battery.

Setup and Connection
Connection Modes
The Ajazz K685T supports three distinct connection methods:
- Bluetooth Mode: Ideal for mobile devices such as smartphones, tablets, and laptops that do not have available USB ports.
- 2.4G Wireless Mode: Provides a clean, cable-free desktop experience. Requires a USB port on your PC or laptop for the 2.4G receiver.
- USB Wired Mode: Offers a fast and responsive connection to PCs and laptops. This mode also charges the keyboard simultaneously. Requires a USB port.

Switching Between Modes and Devices
The keyboard allows connection to up to five devices with quick switching functionality:
- To switch between Wired Mode and Wireless Mode: Press Fn + Tab. (Note: Wired mode connects to only one device.)
- In Wireless Mode:
- For Bluetooth Devices: Press Fn + Q, Fn + W, or Fn + E to connect to and save up to three different Bluetooth devices.
- For 2.4G Receiver: Press Fn + R to connect to the 2.4G receiver (supports one device).

Operating Instructions
Key Functions and Layout
The 68-key layout is compact for easy storage and portability. Many functions typically found on a full-size keyboard are accessible via combinations with the Fn key. This includes F1-F12, Print Screen (Prtsc), Scroll Lock (Scrlk), Pause, Insert (Ins), and End.
Hot-Swappable Switches
The Ajazz K685T features hot-swappable sockets, allowing users to easily change mechanical switches without soldering. This feature is compatible with 3-pin switches.

RGB Backlight Modes
The keyboard is equipped with dynamic RGB backlighting, offering 18 different lighting effects. Users can customize the light color (full RGB spectrum and 7 single colors), brightness, and direction using Fn key combinations. To toggle the backlight on or off, press Fn + X. In Bluetooth mode, the backlight is off by default to conserve power.

Maintenance
Battery Information
The Ajazz K685T features a built-in 1900mAh large-capacity lithium battery. Battery life varies based on usage:
- With backlight: Approximately 15 hours of continuous use.
- Without backlight: Approximately 100 hours of continuous use.
- Standby time: Up to 2700 hours.
Note: Actual battery life may vary depending on usage intensity and environmental factors.
Power Saving Modes
The keyboard incorporates two power-saving stages:
- If the keyboard is inactive for 1 minute, the backlight will automatically turn off.
- If the keyboard is inactive for 30 minutes, it will enter sleep mode to further conserve battery.

Troubleshooting
Connection Issues
- Keyboard not connecting via Bluetooth/2.4G: Ensure the keyboard is in the correct wireless mode (Fn + Tab). For Bluetooth, verify the device is discoverable and paired. For 2.4G, ensure the receiver is properly inserted into a USB port.
- Difficulty switching devices: Confirm you are using the correct Fn key combinations (Fn + Q/W/E for Bluetooth, Fn + R for 2.4G).
Backlight Issues
- Backlight not turning on: Press Fn + X to toggle the backlight. Ensure the keyboard is not in Bluetooth mode, as backlight is off by default in this mode. Check battery level.
- Backlight not changing effects/colors: Refer to the backlight settings section for correct Fn key combinations to adjust effects, colors, brightness, and direction.
General Performance
- Keys not responding: Ensure the keyboard is charged. If using wireless mode, try switching to wired mode to rule out connectivity issues.
- Unexpected behavior: Perform a factory reset by pressing and holding Fn + Spacebar for 3 seconds. The keyboard backlight will flash 3 times, indicating a successful reset to factory settings.
Specifications
| Brand | AJAZZ |
| Model | K685T |
| Connection Method | Bluetooth, 2.4Ghz Wireless, USB Wired |
| Product Dimensions | 311 x 102 x 35 mm |
| Product Weight | 580 g |
| Number of Keys | 68 keys |
| Backlight | RGB (18 effects) |
| Battery Capacity | 1900mAh Lithium Battery |
| Compatibility | Windows, Mac, iOS, Android |
| Features | Hot-Swappable (3-pin switches), Backlit, Rechargeable |

Warranty and Support
Specific warranty information for the Ajazz K685T keyboard is not provided in this manual. For warranty claims, technical support, or further assistance, please refer to the product packaging or contact the retailer/manufacturer directly. Keep your proof of purchase for any warranty-related inquiries.
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