1. Product Overview
This manual provides instructions for the Chofit USB charging cable, designed for use with AfterShokz Xtrainerz AS700 and SHOKZ OpenSwim S700 headphones. This cable facilitates convenient and secure charging for your compatible headphones.

Image 1.1: The Chofit USB charging cable with its magnetic charging dock in an open position, ready to connect to headphones.
2. Package Contents
- 1 x Chofit USB Charging Cable with Magnetic Dock
Note: Headphones are not included with this charging cable.
3. Setup Instructions
Before charging your headphones, ensure you have a suitable power source.
- Connect to Power Source: Insert the USB-A end of the charging cable into a compatible USB power source. Recommended sources include:
- Computer USB port
- Laptop USB port
- Power bank
- USB wall adapter (Important: Use an adapter with an output of 5V/1A or lower. Higher voltage/amperage adapters can damage your headphones.)
- Prepare Charging Dock: Open the magnetic charging dock.

Image 3.1: The Chofit USB charging cable with its magnetic charging dock in a closed position, showing the USB-A connector.
4. Operating Instructions (Charging Your Headphones)
Follow these steps to charge your AfterShokz Xtrainerz AS700 or SHOKZ OpenSwim S700 headphones:
- Position Headphones: Carefully place your headphones into the open magnetic charging dock. Ensure the charging pins on the headphones align with the pins inside the dock.
- Secure Connection: The magnetic design will help the headphones snap securely into place, ensuring a stable connection for charging.
- Verify Charging: Refer to your headphone's indicator lights to confirm that charging has begun. The specific indicator behavior (e.g., solid red, blinking green) will be detailed in your headphone's user manual.
- Charging Time: Charging time may vary depending on the battery level of your headphones. Avoid overcharging by disconnecting once fully charged.

Image 4.1: AfterShokz Xtrainerz AS700 headphones properly seated in the Chofit charging dock, illustrating the magnetic connection.

Image 4.2: A top-down view showing the headphones connected to the charging cable, highlighting the compact design.
5. Maintenance and Care
- Cleaning: Gently wipe the charging pins and cable with a dry, soft cloth to remove dust or debris. Do not use liquid cleaners.
- Storage: Store the charging cable in a cool, dry place away from direct sunlight and extreme temperatures. Avoid bending or kinking the cable excessively.
- Handling: Always hold the plug when disconnecting from a power source, rather than pulling the cable itself.
6. Troubleshooting
- Headphones Not Charging:
- Ensure the USB-A connector is fully inserted into the power source.
- Verify that the headphones are correctly seated in the magnetic dock and the pins are aligned.
- Try a different USB port or power source (e.g., a different computer port or power bank).
- Confirm the power adapter (if used) is 5V/1A or lower. Higher voltage/amperage can prevent charging or damage the device.
- Slow Charging:
- Ensure the power source provides sufficient current (e.g., a dedicated wall adapter or a powered USB port).
- Avoid charging through unpowered USB hubs.
- Compatibility Issues:
- This charging cable is specifically designed for AfterShokz Xtrainerz AS700 and SHOKZ OpenSwim S700 headphones. It may not be compatible with other models, even from the same brand.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Chofit |
| Model Number | qacv |
| Compatible Devices | AfterShokz Xtrainerz AS700, SHOKZ OpenSwim S700 |
| Connector Type | USB Type A |
| Input Voltage | 5 Volts |
| Amperage | 1 Amps (Maximum Recommended) |
| Special Feature | Shock-resistant, Magnetic Connection |
| Cable Length | Approximately 1 meter (3.3 feet) |
| Item Weight | 0.81 ounces |

Image 7.1: A diagram illustrating the approximate 1-meter length of the charging cable.
8. Warranty and Support
For warranty information or technical support regarding your Chofit USB charging cable, please refer to the seller's policies on the platform where the product was purchased. You may also contact the manufacturer, Chofit, directly through their official channels for assistance.
Please retain your proof of purchase for any warranty claims.