<b>HOW TO INSTALL:</b></br> First, you need to use the adapter which included in the package to connect your phone or other devices.</br> Second, use the another side of the adapter to connect the top of the voice changer.</br> Finnally, use your headset to connect the botton of the voice changer.</br> Please make sure you plug insert deep in the hole. Then the voice charger can work!</br> <p> <b>WARM NOTE:</b></br> 1. A voice changer device can be used on any mobile phone, computer, tablet iPad, PS4 game console, XBOX game console, and any game platform. But you need to confirm your device can support 3.5mm jack headphone.</br> 2. When use voice charger on PC, need a adapter: Headphone microphone two-in-one conversion line, then make configuration.</br> <p> <b>LIFETIME GUARANTEE!</b></br> Your satisfaction means everything to us. We are aim to offer the best quality and service.</br> Please feel free to contact us to fulfill your request promptly without any hassle. We will solve your problem within 24 hours.</br> A replacement or full refund will be guaranteed if you are not satisfied with the item. Thank you very much!</br> <p> <b>SPECIFICATION:</b></br> Type:voice changer</br> Material:ABS</br> Color:black</br> Signal to noise ratio: 106dB</br> Dynamic range: 106dB</br> Battery capacity: 300mA/3.7V</br> Charging input: DV5V/1A</br> Battery energy: 3.7wh</br> Battery efficiency: full power about 3-4 hours</br> Size:75*50mm/3.0*2.0"</br> Net weight:120g/4.2oz</br> <p> <b>PACKAGE:</b></br> 1*mini voice changer</br> 1*One audio cable</br> 1*USB micro charging cable</br>