Thank you for viewing. JOYO / JW-03 Wireless System for Guitar I have checked the functionality before listing, and it works without any problems, but the button on the receiver side is stiff. The manual states that the normal battery life is 8 years, so I think it can still be used for a long time. In addition to the receiver and transmitter, the included accessories are a dedicated USB cable and a manual. I have reprinted the manual as I lost the original. There is no original box. - Model: JW-03 - Color: Black