Long-range, High-quality Compact Wireless Transmitter While compact, the Wireless GO II TX from Rode is top-shelf when it comes to ultra-clear Series IV audio transmission. Connecting directly to your pre-existing Series IV RX receiver, the GO II TX can effectively transmit up to 200 meters away and services 40 hours of internal recording memory. Plus, a built-in microphone and a 3.5mm analog audio jack are onboard for immediate use with any setup. Sweetwater audio gurus have also found that the transmitter's 2.4GHz digital transmission and 128-bit encryption ensure an ultra-stable connection with minimal hiccups. Finally, a single charge on the GO II TX's rechargeable battery allows up to seven hours of continuous use - more than enough to tackle an entire night-long performance with ease.