View this product description in Norwegian.

No more cables!
The Perception Wireless high performance Sports Set delivers brilliant sound and is surprisingly easy to use. The included PT45 body-pack transmitter is the small- est 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.
The Perception Wireless Sports Set package includes:

• 1 x SR45 Receiver
• 1 x PT45 Body-pack transmitter
• 1 x C544 L Head-worn microphone
• 1 x Universal power supply with US/UK/EU adapter, 1 x AA size battery
• Frequencyrange: 826.300-831.900 Mhz