・Native UHF 730mhz transmission,anti-interference,ultra-short delay ・Built-in 600mAh battery,long working time,with a USB cable to charge ・The simultaneous use of 4 Sets of equipment and the max transmission range can reach 50m ・Easy to use,small size,lightweight,easy to carry Specification: ・Material:ABS ・Size:11 * 4.5 * 4.5cm ・Frequency:high-frequency 730mhz ・Audio response range:20Hz-20kHz ・Transmission range:max.50m (without barrier) 30m (through the wall) ・Transmission delay:less than 4ms ・Power supply:3.7V 600mAh battery ・Charging time:2 hours ・Use time:6 hours ・Charging port:micro USB ・Application:used for electro-acoustic instruments,such as guitar,bass,violin,etc. Package included: ・1 x Wireless Guitar Transmitter ・1 x Receiver ・1 x USB Cable ・1 x Manual