Mini 8 Multi-Voice Changer Microphone Amplifier Speaker Features: Portable size. Easy to operate. Can make your voice louder. You can change your voice from male to female or female to male freely. It can change into 8 different voices: male voice (3 types), female voice (3 types), robot, and original. Can be used with MP3, MP4, mobile phones and computers. Great value for money. High quality and good frequency response. Low power consumption. Two lithium batteries, long battery life, up to 8 hours, low charging voltage protection function. The speaker casing is made of ABS material, and the casing comes with a strap that can be hung around the waist. Suitable for teaching, tour guides, promotions, speeches, etc. Specifications: Maximum output power: 10W Working voltage: 10.5V, 120MA Frequency response: 200Hz-15kHz Battery: 1000Ma lithium Color: Black Shell: ABS Host size: 98*85*35mm Net weight: 400g Package includes: 1*Speaker 1 * Microphone 1 * Charging cable 1 * Power adapter 1 * Manual