and high qualityFeature: High-definition digital tube display frequency, makes operation more easy and convenient. The built-in battery can be recharged repeatedly and is lightweight for safe use. A single charge supports continuous use for more than 10 hours, providing long battery life. No restrictions on amplification products; mainly receives FM radio signals. Electronic devices with audio playback function can be instantly used as a megaphone. Compact and portable design allows amplification anytime and anywhere. Widely used for teaching, tour guiding, sales promotion, lectures, meetings, karaoke, and singing. FM Wireless Microphone Headset only; other accessories shown in the picture are not included.Specifications: Item Type: FM Wireless Microphone Headset Size: 14x4x17cm / 5.5x1.5x6.6in Color: Black Resistance: 680 Ohm Sensitivity: -52dB 1.5dB Wireless Distance: 15-20m / 49-65ft Transmission Frequency: 87MHz-108MHz Quantity: 1 PieceOperating Steps: 1. Turn on the main power supply of the microphone; the screen will display the radio station band number. 2. Press the "+" or "-" key to adjust the radio frequency and select a band number between 87.5MHz-108MHz. (Note: Select a number not used by local radio stations, for example, 89.7.) 3. Turn on the device with FM radio function, extend the antenna, switch to FM radio mode, and tune the radio frequency to match the displayed number. The wireless microphone can be used once the device is paired with the correct frequency. 4. Wear the microphone on your head and speak into it to amplify your voice.Note: Transition: 1cm = 10mm = 0.39 inch Please allow 0-1cm error due to manual measurement. Please ensure you are comfortable with this before purchasing. Due to differences between monitor displays, the picture may not reflect the actual color of the item. Thank you.Package Includes: 1 x FM Wireless Microphone Headset 1 x Charging Cable 1 x User Manual