1. Product Overview
The SJUJ K03 OWS (Open Wireless Stereo) Bluetooth Earphones are designed to provide a comfortable, open-ear listening experience with high-fidelity sound quality and smart AI translation capabilities. Featuring Bluetooth V5.5 for stable connectivity and a long-lasting battery, these earphones are suitable for sports, gaming, and general use.
Figure 1: K03 OWS Bluetooth Earphones (White)
Figure 2: K03 OWS Bluetooth Earphones (Black)
2. Package Contents
- K03 OWS Bluetooth Earphones
- Charging Case
- User Manual
- Charging Cable (Type-C)
3. Specifications
| Feature | Specification |
|---|---|
| Product Name | Wireless Binaural Bluetooth Headphones |
| Model | K03 |
| Brand | SJUJ |
| Bluetooth Version | V5.5 |
| Communication Type | True Wireless |
| Working Distance | Up to 10 meters (33 feet) |
| Transmission Frequency | 2.4GHz (2402-24080GHz) |
| Headphone Battery Capacity | 30 mAh |
| Charging Case Battery | 3.7V, 200 mAh |
| Battery Life (Earbuds) | Approx. 10 hours (continuous music listening) |
| Total Battery Life (with Charging Case) | Up to 72 hours |
| Call Duration | Approx. 3 hours |
| Charging Interface | Type-C |
| Charging Duration | Approx. 1 hour |
| Microphone Sensitivity | -42±3 dB |
| Microphone Impedance | 2.2 kΩ |
| Frequency Response Range | 20 - 20000 Hz |
| Vocalism Principle | Dynamic |
| Number of Drivers | 2 |
| Impedance Range | Up to 32 Ω |
| Max Output | 100 |
| Total Harmonic Distortion | 10 |
| Features | With Microphone, Volume Control, Control Button, Voice Assistant Built-in, NFC Technology |
| Sound Isolating | No (Open-ear design) |
| Active Noise-Cancellation | No |
| Waterproof | No |
| Support APP | No (for core functions, AI translation may require external app) |
| Material | PC, ABS |
| Dimensions (approx.) | Width: 41mm, Depth: 89mm, Height: 103mm |
| Weight (approx.) | 145g |
| Available Colors | White, Black, Pink |
| Certifications | CE, FCC, RoHS |
Figure 3: Detailed Product Parameters
4. Setup and Charging
4.1 Initial Charging
Before first use, fully charge the earphones and charging case. Connect the provided Type-C charging cable to the charging case and a suitable USB power source. The LED power display on the charging case will indicate the charging status and battery level.
Figure 4: LED Power Display on Charging Case
The earphones feature magnetic suction charging. Simply place the earphones gently into their respective slots in the charging case; they will adhere magnetically and begin charging automatically.
Figure 5: Magnetic Suction Charging
4.2 Bluetooth Pairing
- Ensure the earphones are charged.
- Open the charging case. The earphones will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "K03" from the list of devices.
- Once connected, you will hear a confirmation tone, and the earphones will be ready for use.
The K03 earphones utilize Bluetooth V5.5 for high compatibility and low latency, supporting connections with Windows, iOS, and Android operating systems.
Figure 6: Bluetooth V5.5 Core Upgrade
Figure 7: Multi-Device Compatibility
4.3 Wearing the Earphones
The K03 earphones feature an OWS (Open Wireless Stereo) ear hook design, providing an open listening experience without entering the ear canal. This design ensures a lightweight, snug fit and comfort for extended wear.
Figure 8: Lightweight and Snug Open-Ear Fit
5. Operating Instructions
5.1 Basic Functions
The K03 earphones support the following functions via their control buttons:
- Power On/Off: Automatically power on when removed from the case, and power off when placed back.
- Play/Pause Music: Single press the control button on either earbud.
- Adjust Volume: Use the volume control buttons on the earphones (if present, or via connected device).
- Next Track: Double press the control button on the right earbud.
- Previous Track: Double press the control button on the left earbud.
- Answer/End Call: Single press the control button on either earbud during an incoming call.
- Reject Call: Press and hold the control button on either earbud during an incoming call.
- Activate Voice Assistant: Triple press the control button on either earbud.
5.2 AI Intelligent Translation
The K03 earphones are equipped with AI intelligent translation capabilities, supporting up to 144 languages. To utilize this feature, a compatible translation application on your connected smartphone or device is typically required. Please refer to the specific instructions of your chosen translation app for setup and usage with Bluetooth earphones.
5.3 Sound Experience
Experience cinema-grade HiFi lossless sound quality with 360° panoramic sound effects, providing a dynamic and immersive audio experience. The polymer composite diaphragm unit ensures excellent resolution and powerful low frequencies.
Figure 9: Panoramic Sound Effect Components
The earphones also feature directional transmission technology (DT5.0 pulse directional sound transmission) to ensure efficient sound transmission into the ear canal, preventing audio leakage and protecting privacy.
Figure 10: Directional Transmission Technology
6. Maintenance and Care
- Cleaning: Regularly wipe the earphones and charging case with a soft, dry, lint-free cloth. Avoid using harsh chemicals or abrasive materials.
- Storage: When not in use, store the earphones in their charging case to protect them from dust and damage.
- Battery Care: To prolong battery life, avoid exposing the earphones to extreme temperatures (hot or cold). Charge the earphones regularly, even if not used frequently.
- Water Exposure: These earphones are not waterproof. Avoid exposure to water, sweat, or moisture.
7. Troubleshooting
- Earphones not pairing:
- Ensure both earphones are fully charged.
- Place earphones back in the charging case, close the lid, wait a few seconds, then open again to re-enter pairing mode.
- Turn off and on Bluetooth on your device.
- Forget/remove "K03" from your device's Bluetooth list and try pairing again.
- No sound from one earbud:
- Ensure both earbuds are charged.
- Try placing both earbuds back in the charging case and taking them out again.
- Reconnect the earphones to your device.
- Charging case not charging:
- Check the Type-C charging cable and power adapter for damage.
- Ensure the charging cable is securely connected to both the case and the power source.
- Try a different charging cable or power adapter.
- AI Translation not working:
- Ensure your earphones are properly connected to your device.
- Verify that your translation application is correctly configured to use Bluetooth earphones for input/output.
- Check your device's internet connection, as most translation apps require it.
8. User Tips
- Awareness: The open-ear design allows you to hear your surroundings, which is great for outdoor activities or when you need to be aware of your environment.
- Comfort: Due to their lightweight and non-in-ear design, these earphones are ideal for long listening sessions without discomfort.
- AI Translation: For best results with AI translation, ensure you have a stable internet connection and a well-regarded translation app installed on your paired device.
9. Warranty and Support
SJUJ products are manufactured to high-quality standards. For any issues or support inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for warranty claims.