brand new and high quality Material: Electrical components Color: See pictures Wireless Microphone Kit FM FM Kit Training Electronics Production Parts DIY Electronic Kit Diy Wireless Microphone Kit FM A FM radio receiver and a tape recorder or FM radio with FM receiver can perform the wireless transmission in a certain range, so at home can walk while singing karaoke, can also assist in the large classroom The Teaching Teachers, etc. This wireless microphone circuit design is reasonable, beautiful generous modeling, sound transmission distance of 20 ~ 30 meters, long service life, economical and practical, small power consumption. Very suitable for the radio enthusiast assembly for teenagers For general use. Operating voltage: 1.5 V (1Pc AA batteries, but this product does not contain battery.) (1Pc AA batteries, but this product does not contain battery.) Effective distance: 20 meters or more A complete set of parts (for shell, electronic components, circuit boards, instructions) Quantity: 1Pc Not Retail Package Note: Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you! (User Manual is not included.)