product features: 1. 7 different voice changes: This handheld voice changer has 7 different voice changes, from men to women, women to men, little girls, babies, magic sounds, and deep voices. It is very suitable for talking and entertaining with friends, changing the voice of online games, etc. It is a necessary equipment. 2. How to install: First, you need to use the adapter in the package to connect your mobile phone or other devices. Second, use the other side of the adapter to connect to the top of the voice changer. Finally, use headphones to connect to the bottom of the voice changer. Make sure to insert the plug deeply into the hole. Then the voice charger can work. 3. Adapter required: This audio device can be used on any mobile phone, computer, iPad tablet, PS4 game console, XBOX game console and any game platform. When using the voice charger on the PC, you need an adapter: a headset microphone two-in-one conversion cable, and then configure (included). 4. Easy to use: the volume of the voice changer is very small, easy to carry, plug and play. Very easy to use, no driver installation is required. Just put this voice changer close to your mouth and the sound will change according to your preference 5. The interface of this voice converter is 3.5mm type. You can use an audio conversion cable with a 3.5mm interface. It can be used directly with your favorite earplugs and headphones. Product specifications: Type: Voice Changer Material: ABS Colour: Black Signal to noise ratio: 106dB Dynamic range: 106dB Battery capacity: 300mA/3.7V Charging input: DV5V/1A Battery capacity: 3.7wh Battery efficiency: 3-4 hours full charge