Although new and unused, it has been handled to confirm the sound. Output has been confirmed with an amplifier! Description UHF Guitar Wireless System Transmitter Receiver Built-in Rechargeable This is a wireless transmitter & receiver set for electro-acoustic instruments such as guitars and basses. UHF 730MHz original sound transmission, anti-interference, and ultra-short delay provide the best musical sound. Supports 4 sets of devices operating simultaneously, one-to-one. And the maximum transmission distance is up to 50 meters. Built-in rechargeable, long operating time. A USB cable for convenient charging is also included. Plug and play, easy to use. Compact size, lightweight and easy to carry. Color: Black Material: ABS Audio Response Range: 20Hz-20kHz Frequency: UHF 730MHz Transmission Range: Up to 50M (without obstacles); 30M (through walls) Transmission Delay: Less than 4ms Power: Built-in 3.7V 600mAh rechargeable lithium battery Charging Port: Micro-USB Item Size: 11 * 4.5 * 1.5 cm / 4.3 * 1.8 * 0.6 inches Item Weight: 35g / 1.2oz (each) #Guitar #Wireless #ElectricGuitar