1、Less than 0.5ms latency, no lag or no signal loss. 2、Wirelessly saxophone system with 16 bit/24KHz high-quality audio broadcasting, 20Hz-20kHz full frequency response for more stable and more clear signal transmission. 3、The 360° rotatable plug can cope with various position and angle sockets, which is more convenient to use. 4、Built-in 750mAh rechargeable lithium battery, 5-6 hours working hours, equipped with USB cable, charged more convenient. 5、Plug and play, no need of connection cable, simple to use. It can be used for a variety of electroacoustic instruments such as trumpet, saxphone, trombone, tuba, euphonium, etc. Wirelessly saxophone system can be used for electroacoustic instruments such as trumpet, saxphone, trombone, tuba, euphonium and so on. Plug and play, easy to use. Features: Less than 0.5ms latency, no lag or no signal loss. Wirelessly saxophone system with 16 bit/24KHz high-quality audio broadcasting, 20Hz-20kHz full frequency response for more stable and more clear signal transmission. The 360° rotatable plug can cope with various position and angle sockets, which is more convenient to use. Built-in 750mAh rechargeable lithium battery, 5-6 hours working hours, equipped with USB cable, charged more convenient. Plug and play, no need of connection cable, simple to use. It can be used for a variety of electroacoustic instruments such as trumpet, saxphone, trombone, tuba, euphonium, etc. Specifications: Color: black Frequency: 75Hz-18KHz Transmission delay: ＜0.5ms Dynamic Range: 110dB Transmitter batterys: 3.7V, 300mAh Receiver batterys: 3.7V, 750mAh Package size: 210*120*35mm/8.27*4.72*1.38in Package weight: 200g/7.05oz Packing List: 1*Transmitter 1*Receiver 1*USB Cable 1*User Manual 1*Transmitter 1*Receiver 1*USB Cable 1*User Manual