1. Introduction
Thank you for choosing the GOBOULT K40 True Wireless Earbuds. These earbuds are designed to provide a high-quality audio experience with features such as extended playtime, clear calling, low-latency gaming, and robust bass. This manual provides detailed instructions for setting up, operating, and maintaining your earbuds.
Image: GOBOULT K40 True Wireless Earbuds in Electric Black, presented in their open charging case.
2. What's in the Box
Ensure all items are present upon unboxing:
- GOBOULT K40 True Wireless Earbuds
- K10 Charging Case
- Type-C Fast Charging Cable
- Extra Pair of Eartips
- User Manual (this document)
- Warranty Card
3. Product Overview
The GOBOULT K40 earbuds feature a compact design with advanced audio technology.
Image: Illustration of the brand transition from BOULT to GOBOULT, indicating a new logo with the same product performance.
The K40 earbuds are available in multiple colors to suit individual preferences:
Image: Display of GOBOULT K40 earbuds and their charging cases in five distinct colors: Ivory White, Electric Black, Berry Red, Khaki Green, and Denim Blue.
4. Setup Instructions
4.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case. Use the provided Type-C cable to connect the charging case to a power source.
- A full charge takes approximately 100 minutes.
- 10 minutes of charging provides approximately 100 minutes of playtime.
- The charging case provides up to 48 hours of total playtime.
Image: The GOBOULT K40 charging case being charged via a Type-C cable, illustrating the fast charging capability.
4.2 Pairing with a Device
The K40 earbuds utilize Bluetooth 5.3 for a stable and efficient connection.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for available Bluetooth devices and select "GOBOULT K40" (or similar name).
- Once selected, the earbuds will connect, and you will hear an audio confirmation.
Image: The GOBOULT K40 earbuds in their charging case, emphasizing Bluetooth 5.3 connectivity and fast pairing technology.
5. Operating Instructions
5.1 Touch Controls
The GOBOULT K40 earbuds feature intuitive touch controls for managing audio playback, calls, and voice assistant activation. Specific touch gestures are detailed in the included quick start guide or on the product packaging.
5.2 Audio Playback
The earbuds are equipped with 13mm Bass Drivers and BoomX Technology for enhanced sound quality and powerful bass.
Image: A detailed view of a GOBOULT K40 earbud, showcasing its 13mm Bass Drivers and BoomX Technology for superior audio.
5.3 Clear Calling with ENC
The K40 earbuds feature 4 ENC (Environmental Noise Cancellation) microphones to ensure crystal-clear call quality by reducing background noise.
Image: An internal diagram of a GOBOULT K40 earbud, detailing the Zen Quad Mic Environmental Noise Cancellation (ENC) system for improved call clarity.
5.4 Low Latency Gaming Mode
For an optimized gaming experience, the earbuds offer a 45ms low latency mode, minimizing audio delay for synchronized sound and visuals.
Image: A feature collage for the GOBOULT K40, prominently displaying the 45ms Low Latency feature, beneficial for gaming.
5.5 AI Voice Assistant
Activate your device's AI voice assistant (Siri, Google Assistant) by long-pressing the touch sensor on either earbud.
Image: A GOBOULT K40 earbud with an overlay indicating how to long-press to activate AI Voice Assistants such as Siri or Google Assistant.
6. Maintenance
6.1 Water Resistance
The earbuds are rated IPX5 water resistant, protecting them from splashes and sweat. This makes them suitable for workouts and outdoor activities. Avoid submerging the earbuds in water.
Image: The GOBOULT K40 earbuds and charging case, with an icon indicating IPX5 water resistance, suitable for splashes and sweat.
6.2 Cleaning
Gently wipe the earbuds and charging case with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the charging contacts are clean and dry before placing earbuds back into the case.
7. Troubleshooting
- No Sound: Ensure earbuds are charged and properly paired. Check device volume.
- Pairing Issues: Turn off Bluetooth on your device, then turn it back on. Reset earbuds by placing them in the case, closing, and reopening.
- Intermittent Connection: Ensure no obstructions between earbuds and device. Stay within the 10-meter Bluetooth range.
- Charging Problems: Verify the Type-C cable is securely connected to both the case and power source. Clean charging contacts on earbuds and case.
- Microphone Not Working: Ensure earbuds are connected. Check device settings for microphone input.
8. Specifications
| Feature | Specification |
|---|---|
| Model Name | K40 (Airbass) |
| Connectivity Technology | Bluetooth 5.3 |
| Wireless Range | 10 Metres |
| Audio Driver Size | 13mm Dynamic Driver |
| Audio Latency | 45 Milliseconds |
| Microphones | 4 ENC Calling Mics |
| Battery Life (Earbuds) | Up to 7 Hours (single charge) |
| Total Playtime (with case) | Up to 48 Hours |
| Charging Time | Approx. 100 Minutes |
| Charging Port | Type-C |
| Water Resistance | IPX5 |
| Control Type | Touch, Voice |
| Item Weight | 35.9 Grams (earbuds + case) |
9. Warranty and Support
The GOBOULT K40 True Wireless Earbuds come with a 1-year manufacturer's warranty from the date of purchase. Please retain your proof of purchase for warranty claims.
For technical support or warranty inquiries, please refer to the contact information provided on your warranty card or visit the official GOBOULT website.
