1. Introduction
Thank you for choosing the Kaidi KD-770 Wireless Bluetooth Earphones. These in-ear headphones are designed for comfort and high-fidelity audio, compatible with both Android and iOS devices. This manual will guide you through the setup, operation, and maintenance of your new earphones.
2. Product Overview
The Kaidi KD-770 earphones feature a compact design with a charging case for portability and extended use. They are equipped with Bluetooth 5.0 for stable connectivity and touch controls for easy management of audio and calls.

Image: The Kaidi KD-770 earphones are shown resting inside their open charging case. A small green indicator light is visible on the front of the case, indicating power or charging status. The earphones themselves are black with metallic accents, and the case is a sleek, rounded gray.
3. Setup
3.1 Charging the Earphones and Case
Before first use, ensure both the earphones and the charging case are fully charged.
- Place the earphones into the charging case. Ensure they are correctly seated in their respective slots.
- Connect the charging case to a power source using the provided charging cable.
- The indicator light on the case will show the charging status. A full charge typically takes 1-2 hours.

Image: The Kaidi KD-770 earphones are shown in their open charging case. An arrow points from the case to an icon representing a battery with multiple bars, accompanied by text indicating 'High Durability Battery'. This highlights the extended battery life of the device.
3.2 Bluetooth Pairing
Follow these steps to pair your Kaidi KD-770 earphones with your device:
- Ensure the earphones are charged and placed in the charging case.
- Open the charging case lid. The earphones will automatically enter pairing mode, indicated by a flashing light (refer to specific light patterns in the quick start guide if available).
- On your smartphone or device, go to Bluetooth settings and turn Bluetooth on.
- Search for available devices. Select "KD-770" from the list.
- Once connected, the earphones will indicate successful pairing (e.g., a voice prompt or solid light).
- The earphones will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.
4. Operating Instructions
The Kaidi KD-770 earphones feature touch controls for various functions.
4.1 Basic Touch Controls
- Play/Pause: Single tap on either earphone.
- Next Track: Double tap on the right earphone.
- Previous Track: Double tap on the left earphone.
- Answer/End Call: Single tap on either earphone.
- Reject Call: Press and hold on either earphone for 2 seconds.
- Activate Voice Assistant: Triple tap on either earphone.
4.2 Active Noise Cancellation
The Kaidi KD-770 earphones are equipped with Active Noise Cancellation (ANC) technology. To activate or deactivate ANC, refer to the specific touch control sequence in your quick start guide or experiment with a long press on one of the earbuds (typically 2-3 seconds) until you hear a mode change prompt.

Image: The Kaidi KD-770 earphones are displayed in their open charging case. An arrow points from the case to a circular icon labeled 'Hi-Fi', with accompanying text 'ALTA FIDELIDADE' (High Fidelity), emphasizing the product's high-quality audio output.
5. Maintenance
5.1 Cleaning
To maintain optimal performance and hygiene:
- Gently wipe the earphones and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Clean the charging contacts on both the earphones and the case periodically with a dry cotton swab to ensure proper charging.
5.2 Water Resistance
The Kaidi KD-770 earphones are water resistant with an IPX4 rating. This means they are protected from splashing water from any direction. They are suitable for exercise and light rain, but should not be submerged in water or exposed to heavy downpours.

Image: The Kaidi KD-770 earphones are shown in their open charging case. An arrow points from the case to text indicating 'A PROVA D'ÁGUA IPX4' (IPX4 Water Resistant), accompanied by water droplet icons, signifying the product's resistance to splashes.
5.3 Storage
When not in use, store the earphones in their charging case to protect them from dust and damage, and to keep them charged.
6. Troubleshooting
- Earphones not pairing: Ensure both earphones are charged. Place them back in the case, close the lid, then open it again to re-enter pairing mode. Check your device's Bluetooth settings.
- No sound from one earphone: Try placing both earphones back in the case and taking them out again. Ensure they are both charged. Re-pair if necessary.
- Charging issues: Clean the charging contacts on both the earphones and the case. Try a different charging cable or power adapter.
- Poor audio quality: Ensure the earphones are properly seated in your ears. Check for any obstructions in the earphone nozzles. Move closer to your paired device to avoid interference.
7. Specifications
| Model | KD-770 |
| Connectivity Technology | Wireless (Bluetooth 5.0) |
| Headphones Form Factor | In-Ear |
| Noise Control | Active Noise Cancellation |
| Control Method | Touch |
| Water Resistance Rating | IPX4 |
| Material | Rubber |
| Color | Black |
| Batteries | 1 C batteries required (included) |
| Product Dimensions | 10 x 8 x 8 cm |
| Item Weight | 0.3 Grams |
8. Warranty and Support
For warranty information or technical support, please refer to the documentation provided at the point of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.





