Feature: 1. Portable Design: The multipurpose microphone offers a convenient and portable solution for hosts, allowing them to freely move around during classroom teaching, conference speeches, and performance shows. 2. Suppresses Whistling Microphone: Equipped with a premium microphone that effectively suppresses whistling sounds, ideal for classroom hosts and public speakers. 3. Easy to Operate: The microphone can be worn on the head or held by hand, providing flexibility for hosts. The waist clip design can be easily attached to clothing, reducing the burden on the host's hands. 4. Long Battery Life: With large capacity rechargeable lithium batteries, the microphone and receiver offers long lasting usage without frequent battery replacements. 5. Versatile Usage: Suitable for classroom teaching, conference speeches, and performance shows, the microphone enhances sound propagation effects in various settings. Specification: Item Type: Wireless Tour Guide Voice Transmissio System Material: Plastic Single Waist Pack Battery: 1200mAh Lithium Battery (Shipped with Built in Battery) Single Waist Pack Power Supply: USB Interface Number of Waist Packs: 2 Receiver Battery: 800mAh Lithium Battery (Shipped with Built in Battery) Receiver Power Supply: USB Interface. Package List: 1 x Receiver2 x Waist Pack2 x Headset2 x Lavalier Mic2 x Conversion Cable1 x Conversion Head1 x Charging Cable1 x Instruction Manual