VocoPro COMMANDER-INSTRUMENT-3 - Digital 900 MHz wireless guitar/bass/keyboard/electronic drum system with plug-in receiver and 30° straight TRS instrument plug transmitterLightweight and compact transmitter with no moving connector jack to better secure on instrument. Transmitter and receiver both runs 3 hours on internal battery, or use a USB power bank to expand the play time. Digital 900 MHz offers lower latency, better range, better penetration through walls and less interference with a home or venues Wi Fi environment compared to 2. 4 GHz systems. Easily expand to the full range of the Commander Wireless Receivers