MODEL NO:WCA-01 

Audio Amplifier for better game sound effect 

Adjust volume and mic mute at controller and without access PS4 
    console system

Power on/off, Volume control and mic mute knob

External battery pack for amplifier system and PS4 official controller

1200mAH rechargeable batteries for up to eight hours playing

Special design for easy installing and firm holding 

Protect cirucit for safety charging and usage

Charging through USB port

On/off button on battry pack

LED indicator - red for charging and green for full charged