1. Product Overview
The chalvh B01 Wireless Earbuds are designed for an active lifestyle, featuring Bluetooth 5.4 connectivity, ear hooks for a secure fit, and IP7 waterproofing. This manual provides instructions for optimal use and care.

Image: chalvh B01 Wireless Earbuds shown inside their charging case, displaying LED battery indicators.

Image: An overview of the chalvh B01 Wireless Earbuds highlighting key features such as Bluetooth 5.4, dual power display, Hi-Fi stereo sound, IP7 waterproof, 50 hours playtime, and smart touch control.
2. Package Contents
Ensure all items are present in the package:
- chalvh B01 Wireless Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- Eartips (S, M, L sizes)
- User Manual

Image: The retail box for chalvh B01 True Wireless Earbuds, showing a line drawing of the earbuds and charging case.

Image: A visual representation of the chalvh B01 Wireless Earbuds package contents, including the earbuds, charging case, USB-C cable, and various eartip sizes.
3. Setup
3.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case. Connect the provided USB-C cable to the charging port on the case and a power source. The LED display on the case will indicate the charging status.
- Charging Case: Approximately 1.5 hours for a full charge.
- Earbuds: Charge automatically when placed in the case.

Image: The chalvh B01 charging case with an LED digital display showing the battery percentage of the case and individual earbud charge status.

Image: Details on the chalvh B01 Wireless Earbuds' battery life, indicating 10 hours on a single charge and 50 hours with the charging case, along with 1.5 hours for fast charging.
3.2 Pairing with a Device
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- Enable Bluetooth on your smartphone or other device.
- Search for "B01" in the list of available Bluetooth devices and select it to connect.
- Once connected, a voice prompt will confirm successful pairing.
The earbuds will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.

Image: A smartphone screen displaying Bluetooth settings with "B01" listed as an available device, next to the chalvh B01 charging case and an earbud.
3.3 Wearing the Earbuds
For optimal sound quality and a secure fit, choose the correct eartip size and adjust the ear hooks.
- Select the eartips (S, M, L) that best fit your ear canal.
- Place the earbud into your ear.
- Adjust the ear hook over your ear to ensure a stable and comfortable fit.

Image: The chalvh B01 Wireless Earbuds with a display of S, M, and L size eartips, emphasizing their ergonomic design for comfort and secure fit during sports.

Image: A three-step guide demonstrating how to properly fit the chalvh B01 Wireless Earbuds: 1. Choose suitable eartips, 2. Put the earbuds into your ear, 3. Adjust the earbud to fit best.
4. Operating the Earbuds
The chalvh B01 Wireless Earbuds feature smart touch controls for various functions.
4.1 Touch Controls
| Action | Left Earbud (L) | Right Earbud (R) |
|---|---|---|
| Play/Pause | Single tap | Single tap |
| Next Track | Double tap | Double tap |
| Previous Track | Triple tap | Triple tap |
| Volume Up | N/A | Press and hold (2s) |
| Volume Down | Press and hold (2s) | N/A |
| Answer/End Call | Single tap | Single tap |
| Reject Call | Press and hold (2s) | Press and hold (2s) |
| Activate Voice Assistant | Triple tap | Triple tap |

Image: A diagram illustrating the smart touch control gestures on the chalvh B01 Wireless Earbuds for functions like track control, volume, and voice assistant activation.
4.2 Noise Cancelling
The earbuds feature CVC 8.0 Noise Cancelling technology for clearer calls and an immersive audio experience.

Image: A visual representing the HiFi Stereo Sound and CVC 8.0 Noise Cancelling features of the chalvh B01 Wireless Earbuds, showing sound waves and a small crowd being muted.
5. Maintenance
5.1 Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove eartips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Do not use abrasive cleaners or solvents.
5.2 Water Resistance (IP7)
The earbuds are IP7 waterproof, meaning they can withstand immersion in water up to 1 meter for 30 minutes. This makes them suitable for workouts and light rain. However, they are not designed for swimming or prolonged water exposure.
- Ensure the charging port cover (if any) is securely closed before exposure to water.
- Do not charge the earbuds if they or the charging case are wet.

Image: The chalvh B01 Wireless Earbuds shown with water splashing, illustrating their IPX7 waterproof capability, ideal for various activities.
5.3 Storage
Store the earbuds in their charging case when not in use to protect them and keep them charged.
6. Troubleshooting
If you encounter issues with your chalvh B01 Wireless Earbuds, try the following solutions:
6.1 Earbuds Not Pairing
- Ensure both earbuds are charged.
- Turn off Bluetooth on your device and turn it back on.
- Delete "B01" from your device's Bluetooth list and attempt to pair again.
- Place earbuds back in the case, close the lid, wait a few seconds, then open to re-enter pairing mode.
6.2 No Sound or Low Volume
- Check the volume level on both your device and the earbuds.
- Ensure the earbuds are properly connected to your device.
- Clean any debris from the earbud speakers and eartips.
6.3 Charging Issues
- Verify the USB-C cable is securely connected to both the charging case and the power source.
- Try a different USB-C cable or power adapter.
- Ensure the charging contacts on the earbuds and inside the case are clean and dry.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | B01 |
| Bluetooth Version | 5.4 |
| Battery Life (Earbuds) | Up to 10 hours (single charge) |
| Battery Life (with Case) | Up to 50-60 hours total |
| Charging Time (Case) | Approx. 1.5 hours |
| Water Resistance | IP7 Waterproof |
| Noise Control | Active Noise Cancellation (CVC 8.0) |
| Control Method | Touch |
| Audio Driver Type | Dynamic Driver (13mm) |
| Frequency Range | 20 Hz - 20,240 Hz |
| Item Weight | 1.76 ounces (50 Grams) |
| Product Dimensions | 2.5 x 2 x 1 inches |
| Compatible Devices | Smartphones, Tablets |

Image: Technical parameters of the chalvh B01 Wireless Earbuds as printed on the product packaging, including model, play time, charging time, impedance, frequency range, wireless transmit power, battery, input, and output.
8. Warranty and Support
8.1 Warranty Information
The chalvh B01 Wireless Earbuds come with a 3-year warranty from the date of purchase. This warranty covers manufacturing defects and ensures product quality.
8.2 Customer Support
For any questions, technical assistance, or warranty claims, please contact chalvh customer service. We offer 24-hour customer service support.
- Email: earbudsvip28@gmail.com

Image: Icons indicating 3 years warranty, 24H customer service support, and climate pledge friendly status for chalvh products.
9. Safety Information
Please read and follow these safety guidelines:
- Do not disassemble, hit, or burn the device.
- Keep the device away from extreme temperatures.
- Avoid prolonged listening at high volumes to prevent hearing damage.
- Keep out of reach of children and pets.

Image: Product packaging displaying CE, RoHS, UKCA, FCC certifications and a warning: "WARNING!!! Don't disassemble, hit, or burn the device."