Sennheiser HME 280 Intercom alternatives, similar headphones

Poly - Plantronics Explorer 50
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STREETZ HL-235
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Pioneer SE E511
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Philips FS3BK
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Creative Sound Blaster JAM
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EPOS I SENNHEISER CC 530
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Audio-Technica ATH R70x
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Audio-Technica ATH M70X
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Audio-Technica ATH M50XDG
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Lenovo P723
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PORT Designs Bluetooth Earbuds
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Yurbuds Focus 100
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Sennheiser SH 330
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Sennheiser CC 550
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Sennheiser CC 515
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Sennheiser SH 230
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Sennheiser SH 250
Specifications

Sennheiser SH 335
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Sennheiser SH 330 IP
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Sennheiser SH 350 IP
Specifications

Sennheiser CC 515 IP
Specifications

Sennheiser CC 520 IP
Specifications

Sennheiser CC 550 IP
Specifications

Sennheiser Century SC 630
Specifications