Microphone and speaker, I have 8 of them remaining. This product is a portable waist-worn speaker that operates on a lithium battery and is designed for use with a microphone and headset. Usage: Ideal for speakers such as teachers, tour guides, or in training sessions to amplify sound. Specifications: Features a maximum power of 8 watts and contains a high-precision magnet for clear sound quality. Power: Operates on a rechargeable lithium battery, making it suitable for extended portable use. The piece is 30, and if you take them all, I will negotiate the price.