Andoer Portable Black Mini 8 Multi Voice Changer Microphone Megaphone Loudspeaker Portable size. Easy to operate. Can make your sounds more louder. Can change your voice from male to female or female to male freely. It can change to 8 kinds of different voices: Male (3 types), Female (3 types), Robot, and Original. Can work with MP3, MP4, cell phone, and computer. High performance-to-price ratio. High quality, good frequency response. Low power consumption. Two lithium batteries, long battery life, up to 8 hours, charging low voltage protection function. Loudspeaker enclosure is ABS material, case with strap, can be worn at the waist. Suitable for teaching, tour guiding, sales promotion, and speech, etc.