Safetynet DIGITAL VOICECHANGER-11 Portable Live Sound Card, External Live Broadcast Sound Card Mini Voice Changer with 4 Sound Effects for Mobile Phone Computer PC, Suitable for Recording, Online Singing Chatting, etc Security Camera  (N/A GB, 1 Channel)

Specification: Charging input: DC5V 1A Battery capacity: 3.7V 300mAh Charging time: 30 minutes Using time: 1-2 hours SNR: 106dB Dynamic range: 106dB Color: Black Size: 7.5*3.5*1cm/2.95*1.38*0.39in How to Use 1.Connect your phone and the voice changer with the 3.5mm audio cable; 2.Plug the headphone cable with microphone into the voice changer; 3.Select the sound that you want to change and speak to the microphone. Package Included: 1 x Mobile phone voice changer 1 x 3.5mm audio cable 1 x USB charging cable 1 x User manual