Cyber Acoustics iRhythms A-9900 alternatives, similar headphones

Jabra C250
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Jabra GN 2100 VoIP 3-i-1 Flex. NC
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Jabra GN 2100 VoIP Duo Flex. NC
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Jabra GN 2100 USB
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Jabra BT150
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Jabra SoundTube GN 2117-ST with SureFit
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Etymotic ETY-COM ER22-P
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Philips SHG8010
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Philips SHG8050
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Poly Voyager 510 + HL10 Lifter
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Philips SHP895
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Poly - Plantronics SupraPlus Polaris P261 with Voice Tube
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Cyber Acoustics AC 645
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Cyber Acoustics ACM 900
Specifications

Cyber Acoustics ACM 800
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Cyber Acoustics AC 740
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Cyber Acoustics AC 850
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Cyber Acoustics iRhythms A-9800
Specifications

Cyber Acoustics AC 851B
Specifications

Cyber Acoustics ACM 95B
Specifications

Cyber Acoustics iRhythms A-9500
Specifications

Cyber Acoustics HE-200rb
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Cyber Acoustics ACM 1001
Specifications

Cyber Acoustics ACM 2900
Specifications