With this EW D1-845-S system by Sennheiser, you needn't worry about which frequency you can or cannot use. It operates on the 2.4GHz band that can be used freely all over the world!
This rugged G3 receiver is very well suited for on-the-road use, thanks to its reliability and flexibility. B frequency (626 to 668 MHz).
Sennheiser's E 608 is a dynamic, super cardioid drum and brass instrument microphone. It has a frequency range of 40 to 16,000 Hz and a sensitivity of 0.8 mV/Pa.