Features: The wireless uni-directional microphone with filter is of high sound quality while reducing background noise, having no hum or crackle noise. Comes with UHF receiver with 6.35mm plug, compatible with speaker, kraraoke system, home theater system, amplifier, sound card, mixer, etc. Wide application, perfect for karaoke, speech, meeting, stage performance, outdoor wedding, classroom, etc. Working distance of the wireless microphone is up to 50 meters, offering you great freedom of movement while using. Plug and play, easy, quick and convenient to use. Stylish design, high-quality material, smooth and glossy texture feeling, giving you great using experience. Specifications: Color: Black, gold (optional) Material: Plastic Modulation Mode: FM Receive Frequency: UHF S/N Ratio: more than 100dB Power Supply of Microphone: 2 * AA batteries (not included) Power Supply of Receiver: 18650 rechargeable lithium battery (not included) Working Distance: 30~50 Meters(At Open Area) Microphone Size: 24 * 4 * 4cm/ 9.4 * 1.5 * 1.5inch Microphone Weight: 131g/ 4.6oz Receiver Size: 7.6 * 2.4 * 2.7cm/ 2.9 * 0.9 * 1inch Receiver Weight: 68g/ 2.3oz Package Size: 25.5 * 9 * 6.4cm/ 10 * 3.5 * 2.5inch Package Weight: 300g/10.5oz Package List: 1 * Microphone? 1 * Receiver 1 * USB Cable (Random Color)