The AKG WMS45 Perception Wireless Sports Set includes a PT45 body-pack transmitter that is the smallest and lightest transmitter in its class. The package also includes a C544 L condenser head-worn microphone featuring an external shock mount for high mechanical-noise rejection. Its moisture shield ensures a high degree of humidity protection for the microphone.

Includes:
1x SR45 Wireless Stationary Receiver
1x PT45 Wireless Bodypack Transmitter
1x C544 L Sports Headworn Condenser Microphone
1x Universal power supply with US/UK/EU adapter
1x AA battery

AKG SR45 Wireless Stationary Receiver Specifications:

Carrier Frequency Range: 530.025-559.000 MHz (Band A)
Audio Bandwidth: 40 Hz - 20 kHz
THD: typ. 0.8% (at 1kHz)
Signal/Noise Ratio: typ. 105 dB(A)
Modulation: FM
Audio Outputs: Balanced XLR and unbalanced 1/4" jack: adjustable from mic to line level. Output level at rated deviation: 500 mV RMS
Squelch Threshold: -100 to -70 dBm adjustable
Dimensions (W x H x D): 7.9" x 1.7" x 5.9"
Net Weight: 12.7 oz

AKG PT45 Wireless Bodypack Transmitter Specifications

Carrier Frequency Range: 500 - 865 MHz
Audio Bandwidth: 40 - 20,000 Hz
THD: typ. 0,8% (at 1kHz)
Signal/Noise Ratio: typ. 105 dB(A)
Modulation: FM
RF Radiation: 10 mW
Power Supply: 1 x 1.5V AA size battery
Battery Life: 10 hours typ.
Dimensions (W x H x D): 2.4" x 2.9" x 1.2"
Net Weight: 2.1 oz
The AKG C544 L headworn miniature condenser microphone with convenient behind-the-neck headband has a cardioid polar pattern and therefore "prefers" sounds arriving from the front (from the user's mouth).

The microphone body containing the condenser transducer is shock mounted on the microphone arm in order to suppress cable and mechanical noise. The microphone arm will place the microphone in front of the corner of your mouth to minimize pop noise and protect the microphone from contamination. The supplied windscreen makes the microphone even less susceptible to wind and pop noise.

A special moisture shield on the microphone capsule makes it difficult for moisture and makeup to penetrate into the microphone. This barrier prevents the microphone sound entries from being clogged by sweat or makeup which would make the sound dull and reduce the sensitivity of the microphone. Therefore, never remove the moisture shield from the microphone.

The C544 L is a condenser microphone and therefore needs a power supply.

AKG C544 L Headworn Microphone Specifications:

Type: Pre-polarized condenser microphone
Polar Pattern: Cardioid
Frequency Range: 20 Hz to 20 kHz
Sensitivity: 40 mV/Pa (-28 dBV re 1V/Pa)
Max. SPL: 126 dB/130 dB (for 1%/3% THD)
Equivalent Noise Level (IEC 60268-4): 22dB-A
Impedance: 200 ohms, electronically balanced
Recommended Load Impedance: >2000 ohms
Supply Voltage: 9V battery supply through B 29 L or bodypack transmitter, or 9 to 52 V universal phantom power through MPA V L adapter
Powering: approx. 2 mA
Cable: 5 ft
Finish: Matte Black
Dimensions: 5.2" dia.
Net Weight: 1.1 oz exc. of connector

AKG WMS45 (AKG Perception Wireless Sport)