The wireless microphone shall be a professional transmitter with interchangeable head and switchable carrier frequencies. It shall have a gain adjustment and a LCD which shows a frequency code, the battery level status and the status of the peak limiter. Frequency and power locking capability shall be included.

Carrier Frequency: 554 - 865 MHz (available frequencies depend on applicable country regulations)
RF Output Level: < 20 mW 
Battery Life: at least 8 hours (with 9V Duracell MN1604 alkaline battery)
Overall Dimensions (LxD)
   ULX2/58, ULX2/Beta58: 241 x 50.8 mm
   ULX2/87, ULX2/Beta87: 216 x 50.8 mm
Net Weight (without battery)
   ULX2/58, ULX2/Beta58: 298 g
   ULX2/87, ULX2/Beta87: 195 g