Features: 1.The outer shell is made of ABS material, which is environmentally friendly and at the same time moisture?proof and corrosion?resistant. The microphone has a sound cotton to reduce the spraying of wheat, which has a good overall feeling 2.Enable any of your speaker equipment to achieve wireless amplification. Restore the original sound. Using UHF digital chip, with lossless sound quality transmission, more pure sound 3.The wireless receiver has low battery prompt and low battery shutdown function. In case of co?channel interference during use, the A/B channel can pass frequency conversion to avoid co?channel interference 4.Using UHF digital chip, only 25 millisecond transmission delay. The sachs wireless U?segment microphone has strong anti?interference ability and more reliable and stable transmission signal 5.The sachs wireless U?segment microphone is small and exquisite, easy to carry around, no matter where you go, there is a stage for you specification:Item Type: Saxophone Microphone Material: Metal + plastic Microphone Battery: 3.7V lithium battery 400MA Receiver Battery: 3.7V lithium battery 400MA Wireless Microphone Receiver Frequency Band A: 600MHZ-649MHZ Frequency Band A: 600MHZ-649MHz Frequency Band B: 650MHZ-699MHZ Frequency Band B: 650MHZ-699MHz RF Power: 10dBM Frequency Range: 50HZ-15KHZ Microphone Core Type: Capacitive microphone Battery Type: 3.7V lithium battery 400mah Battery Type: 3.7V lithium battery 400MA Power Supply: USB 5V500MA-1A Operating Distance: Effective distance of 30 meters Operating Distance: Effective distance of 30 meters PackageList: 1 x Microphone 1 x Receiver 1 x User Manual 1 x 6.35 Conversion Head 1 x Power Cord