How do I charge the Shen Zhen Suo Yi Technology V9 High End Business Bluetooth Headset?

To charge the Shen Zhen Suo Yi Technology V9 High End Business Bluetooth Headset, follow these steps:

1. Make sure the battery is fully charged before the first use. The charging temperature should be between 32 degrees F - 104 degrees F (0 - 40 C).
2. Connect the charging cord to the 5V power USB interface.
3. Insert the other end of the charging cord into the charging port on the headset.
4. When the indicator light on the headset turns red, it means the headset is charging. Once the battery is fully charged, the red light will turn blue.

Note: The power requirements for charging are 5VDC-180mA.

For more information and visual instructions, you can refer to the provided YouTube video link: https://youtu.be/7rLR3ZuNncQ