Short stubbies come standard, but longer antennas are available. Headphone monitoring, of course. Balanced XLR output connector at the bottom. Audio output level control. Helical filter design improves rejection of unwanted RF signals.
Bodypack transmitter is also metal.
Short wire antenna. Single 9-volt battery powering. Now we are a step closer to standardizing lavalier connectors just like the world standardized XLR-3 mic cables. Best news, though, is the price. A walk-test against a Lectrosonics 195D UHF diversity system was an almost even match as far as distance went.