Introduction
Thank you for choosing GCBIG S70 Wireless Earbuds. These earbuds are designed to provide a superior audio experience with advanced Bluetooth 5.2 technology, HiFi stereo sound, and a comfortable, secure fit. This manual will guide you through the setup, operation, and maintenance of your new earbuds to ensure optimal performance and longevity.

Safety Information
Please read all safety warnings and instructions carefully before using this product to prevent injury or damage. Keep this manual for future reference.
- Not suitable for children under 3 years old.
- Avoid prolonged exposure to high volume levels to prevent hearing damage.
- Do not disassemble, repair, or modify the product. This may cause fire, electric shock, or complete damage to the product.
- Keep the charging case and earbuds dry. Do not expose them to extreme temperatures or humidity.
- Dispose of batteries according to local regulations. Do not dispose of batteries in fire.
What's in the Box
Verify that all items are present in the package:
- 2 x True wireless earbuds (Left and Right)
- 1 x USB-C Charging Case
- 1 x USB-C Charging Cable
- 1 x Headphone lanyard
- 3 x Earplugs (S, M, L)

Product Overview
The GCBIG S70 earbuds are engineered for an immersive audio experience and user convenience.
Key Features:
- Bluetooth 5.2 Technology: Ensures stable connection, faster transmission speed, and low-latency audio.
- HiFi Stereo Sound: Equipped with 13mm speakers and triple-layer composite diaphragms for powerful bass and crystal-clear sound.
- Extended Playtime: Up to 8 hours on a single charge, and a total of 40 hours with the charging case.
- One-Step Pairing: Automatic connection to your device after initial setup when opening the charging case.
- Smart Touch Control: Intuitive touch sensors on each earbud for managing music, calls, and voice assistant.
- IP7 Waterproof: Nano-coating protects against heavy rain and sweat, ideal for workouts and outdoor activities.
- Ergonomic Comfort: Lightweight design (5g per earbud) and multiple ear tip sizes (S, M, L) for a secure and comfortable fit.

Sound Quality
The S70 earbuds feature 13mm full-range dynamic driver unit speakers with titanium diaphragm dynamic drivers, delivering powerful deep bass and crystal-clear sound for an optimal listening experience.

Battery Life
Enjoy up to 8 hours of continuous listening on a single charge. The portable charging case extends the total playtime to an impressive 40 hours, ensuring your music lasts all day.

Waterproof Rating
The earbuds feature an IP7 waterproof and sweatproof nano-coating, protecting them from heavy rain or sweat during intense workouts. Note: The waterproof function is not permanently effective and may diminish with daily wear and tear. Wipe immediately after exposure to moisture.

Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case. Connect the provided USB-C charging cable to the charging port on the case and a USB power source. The LED display on the case will show the battery percentage.
2. Initial Pairing
- Ensure the earbuds are in the charging case and the case has power.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for new devices.
- Select "S70" from the list of available devices to connect.
- Once connected, the earbuds are ready for use. For subsequent uses, they will automatically connect to the last paired device when the case is opened.

3. Fitting the Earbuds
For optimal sound quality and comfort, choose the ear tips that best fit your ears. The S70 comes with Small (S), Medium (M), and Large (L) earplugs.
- Try each size to find the one that creates a snug seal in your ear canal.
- Gently insert the earbud into your ear, then twist slightly to secure it in place.


Operating Instructions
Power On/Off
- Power On: Open the charging case, and the earbuds will automatically power on. Alternatively, press and hold the touch area on both earbuds for 2 seconds.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off. Alternatively, press and hold the touch area on both earbuds for 5 seconds.
Smart Touch Controls
The GCBIG S70 earbuds feature intuitive touch controls on each earbud. You can control various functions without needing to access your phone.


| Action | Gesture (Left/Right Earbud) |
|---|---|
| Play/Pause | Double tap (x2) |
| Next Track | Press and hold for 2 seconds (Right earbud) |
| Previous Track | Press and hold for 2 seconds (Left earbud) |
| Volume Up | Single tap (Right earbud) |
| Volume Down | Single tap (Left earbud) |
| Answer/End Call | Double tap (x2) |
| Reject Call | Press and hold for 2 seconds |
| Activate Voice Assistant (Siri/Google Assistant) | Triple tap (x3) |
Making and Receiving Calls
The built-in microphone in each earbud utilizes call noise cancellation for clear communication.
- Answer Call: Double tap either earbud.
- End Call: Double tap either earbud during a call.
- Reject Call: Press and hold either earbud for 2 seconds.

Mono Mode
You can use either the left or right earbud independently. Simply take one earbud out of the case, and it will automatically connect to your device. The other earbud can remain in the case or be used by another person.
Maintenance
Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove ear tips and clean them with mild soap and water if necessary. Ensure they are completely dry before reattaching.
- Do not use harsh chemicals, cleaning solvents, or strong detergents.
Storage
When not in use, store the earbuds in their charging case to protect them and keep them charged. Store the case in a cool, dry place away from direct sunlight and extreme temperatures.
Water Exposure
While the earbuds are IP7 waterproof, it is recommended to wipe them dry immediately after exposure to water or sweat to maintain their protective performance over time.
Troubleshooting
If you encounter any issues with your GCBIG S70 earbuds, please refer to the following common solutions:
- Earbuds not pairing with device:
- Ensure Bluetooth is enabled on your device.
- Make sure the earbuds are charged and out of the charging case.
- Forget the device from your phone's Bluetooth settings and try pairing again.
- Restart your device and the earbuds.
- Only one earbud working:
- Place both earbuds back into the charging case, close the lid, and then open it again to re-establish the connection between them.
- Ensure both earbuds are charged.
- Poor sound quality or disconnections:
- Ensure the earbuds are within the Bluetooth range (up to 18 meters).
- Check for interference from other wireless devices.
- Clean the ear tips and speaker mesh to remove any debris.
- Charging issues:
- Ensure the charging cable is securely connected to both the case and the power source.
- Try a different USB-C cable or power adapter.
- Clean the charging contacts on the earbuds and inside the case.
If the issue persists, please contact GCBIG customer support for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Model Name | S70 |
| Brand | GCBIG |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.2 |
| Bluetooth Range | 18 Meters |
| Ear Placement | In Ear |
| Control Type | Touch Control |
| Water Resistance Level | IP7 Waterproof |
| Battery Life (Single Charge) | 6-8 hours |
| Total Playtime (with Case) | Up to 40 hours |
| Audio Driver Type | Dynamic Driver (13mm) |
| Item Weight | 3.53 ounces (100 Grams) |
| Product Dimensions | 2.36 x 0.79 x 1.97 inches |
| Material | Plastic |
| Compatible Devices | Smartphones (Android/iOS), tablets, laptops, computers, TV with Bluetooth |
Warranty and Support
For product questions or feedback, please contact GCBIG customer support. Refer to the official GCBIG website or your purchase platform for specific warranty details and contact information.
You can also find additional information and a PDF version of the Instructions for Use (IFU) at the following link: GCBIG S70 Instructions for Use (PDF)





