CallVi V-307 - Wired Voice Amplifier Manual

Introduction

Callvi brand voice amplifier are stylish, compact and easy to operate. The system adopted advanced audio processing circuit technology, which makes the sound loud and clear, and has a long-time battery life. The versatile integrated design is suitable for teaching, training, speeches, tour guides, promotional shopping guides, etc., providing you with excellent sound effects anytime and anywhere, bringing unexpected and convenient to your work life, and enjoying life every day.

Tips: Please use the brand specification charger.

Machine Description

Main Machine

1. Power on / off
2. Play/Pause
3. Previous
4. Next
5. Mode
6. DC 5V Charging Port
7. TF card Port
8. AUX Port
9. Mic Port
10. USB Port
11. Volume Adjustment

Precautions

• Please store and use this product in a normal temperature environment.
• Do not expose this product to rain or moisture for a long time.
• Do not throw it away to avoid product damage caused by falling.
• Do not disassemble, repair or modify this product by yourself.
• Please charge the power with the rated voltage of the machine
• At high volume for a long period of time, it may cause hearing damage. When listening to radio, avoid to excessive volume and excessive

Note: Battery should not be exposed to sunlight, fire or overheated environment.

Standard packaging

Methods of Operation

Power on / Off

1. Press and hold "" button for 2 seconds with a voice of welcoming to use Callvi products.
   Note: Insert the Wired Microphone to Mic port directly, the machine will power on automatically.
2. Press and hold "" button for 2 seconds
   Note: No any operations within 60 mins, the machine will power off automatically.

Voice Amplifier

1. Insert the wired microphone to the MIC Port to enter into speaker mode, and put on the microphone headset with a suitable angle. (Please keep the distance 1-2 cm from the microphone to your mouth.)
   
2. Start the sound amplification, and rotate the volume adjustment to increase or reduce the volume.

Music Mode

1. TF card / USB disk music playing
   Insert TF card or USB disk to the port to enter MP3 mode. If the TF card or USB disk have the music files, the machine automatic play the music, If no music files in TF card or USB disk, the machine will enter into Bluetooth Mode.
   When playing the music, Short press the Previous / Next button to rewind / forward the music. Short press play / pause to stop / play the music.
   Note:
   The max capacity for USB or TF card: 32GB.
   Music format: MP3
   

Bluetooth Mode

1. Turn on the main machine, enter into the Bluetooth mode with the voice of "Bluetooth is waiting for connection".
2. On your Bluetooth device, search and click the corresponding model V-307 for connection. After Bluetooth connecting, the machine can play the music that is transmitted by your Bluetooth device.
   Note: If the machine has successfully connected the Bluetooth device once, the machine will connect the Bluetooth device automatically by next time.

Recording Mode
Recording Files: Insert TF card or USB disk to the machine, and insert the wired microphone to the Mic port, press and hold M button for 2 seconds to enter into Recording mode. Press and hold M button for 2 seconds to stop recording.

Delete the Recording Files: when playing the current recording files, press play and pause button for 2 seconds to delete the current recording file.

Battery Charging

Main machine

1. Use the standard accessory USB cable, one end is plugged into the main machine, the other end is plugged into the charger or computer USB port, when the battery is charged full, the red light is always on.
2. When the machine is plugged into TF card or USB disk, use the standard accessory USB cable, one end is connected with the machine, the other end is connected with computer, it enters into Card Reader mode, it can copy or delete the music file of TF card or USB disk.

Common Faults and Treatment Methods

Warranty Terms

The company provides after-sales service methods:

1. Consulting service: Please read the instruction manual of this product carefully before using the product. If you encounter any problems during use, you can contact your local dealer.
2. Replacement service: During the replacement period (within seven days from the date of purchase), there is a non-human failure when it is in normal use. Please keep the product, accessories and packaging completely, after confirming the faults, you can choose to exchange or repair, the user can contact the local dealer for processing.
3. Warranty service: During the warranty period, there is a non-human failure in normal use, and you can have free warranty service (the main machine is free of charge within one year, if it is damaged by human, should pay for maintenance).
4. Charge repair service: The product can be repaired for one year to three years from the date of purchase. The user needs to pay for the component cost, transportation fee and reasonable maintenance labor cost.
5. The following conditions are not covered by the warranty, but paid services are available.

• Exceeding the warranty period.
• Product damage caused by unexpected factors or human behavior.
• Product failure or damage caused by force majeure factors such as earthquakes, fires, floods, lightning strikes, etc.
• Unauthorized disassembly, repair or modification without the permission of the company.

Specification