General Description
The HDC 451-1 NoiseGard™ mobile are open stereo headphones with active noise compensation for mobile applications.
Features
	Reduction of ambient noise by up to 10 dB
	Protects the hearing and reduces stress
	Lightweight and comfortable to wear
	Considerably improves audio reproduction quality in noisy environments
	Powered via 2 AA size alkaline batteries or environmentally friendly NiCd rechargeable batteries
	Delivery includes: 1 HDC 451 NoiseGard™ mobile
	2-year guarantee
Delivery Includes
	1 HDC 451-1 NoiseGard™ mobile
	1 adaptor to ¼” (6.3 mm) stereo jack plug
	1 adaptor 2xmono

Technical Data

Glossary

Glossary
 

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Variant
	Product	Article No.
	HDC 45-16-0	03222
	The Headphone HDC 45-16-0 is a NoiseGard product, with 2-pin special connector and NoiseGard power supply from board.
	HDC 45-26-0	03496
	The Headphone HDC 45-26-0 is a NoiseGard product, with 3-pin special connector and NoiseGard power supply from board.
	HDC 451	03840
	The Headphone HDC 451 is a NoiseGard product, with NoiseGard power supply from battery pack. (Blisterverpackung)
	HDC 451-1	04059
	The Headphone HDC 451-1 is a NoiseGard product, with NoiseGard power supply from battery pack. (Bulkverpackung)