Sennheiser Free Port

Sennheiser wireless sound quality and interference-free reception for presenters, lecturers, and theater performances.
The Sennheiser FP12-C freePORT Presentation Set is reliable, robust, user-friendly wireless system. It gives you the high-quality audio you expect from Sennheiser as well as foolproof setup and operation at an impressively low price.
I ordered a Sennhiser mic to try for the mark 12.30 Poroject. Its wirless and should help while doing outdoor live shooting and in the studio.
The fP12 freePORT Presentation Set ensures maximum speech comprehensibility during lectures, presentations and theater performances. The system includes a bodypack transmitter, a diversity receiver and an inconspicuous omnidirectional lavalier microphone with evolution wireless locking connector.

Sennheiser FreePORT Wireless Presentation Set Specifications:

RF frequency range: UHF
Transmission/receiving frequencies: 4
Switching bandwidth: 2 MHz
Frequency response: 80 16,000 Hz
Signal-to-noise ratio: 95 dB(A)
THD (total harmonic distortion): <1%
Audio output level: XLR (balanced): +16 dBu
Audio output level: 1/4" (unbalanced): +10 dBu
Power supply (receivers): 120 V
Power supply (transmitters): 9V
RF output power: 10 mW
Operating time (transmitters): 10 hours
Dimensions (bodypack transmitter): 2.4 x 4 x 1.2 in with clip
Weight (bodypack transmitter): 3.2 oz
Lavalier microphone transducer type: condenser
Dimensions (receiver): 1.4 x 8.4 x 4 in
Weight (receiver): 1.25 lb
Sennheiser FreePORT Wireless Presentation Set Features:

Four switchable UHF frequencies for interference-free reception
Absolutely safe transmission
Diversity Technology for highest reception quality
Adjustable Squelch for undisturbed operation
Receivers built in robust metal housing
Dynamic processor for crystal clear sound
Includes: Bodypack transmitter and lavalier microphone, Diversity receiver, Power supply, and User manual