Compare Open-Ear Designs
Compare open-ear and bone-conduction wireless audio by mechanism, fit, awareness limits, and the model details to verify before buying.
If you are interested in more details, you can find full information on the seller's page.
Poly CS540A wireless headset with DECT 6.0 technology and a 1920–1930 MHz frequency range. It has a stated wireless range of 393.7 ft, monaural audio and an in-ear earpiece design. Wearing styles are over-the-ear and over-the-head. Includes a noise-cancelling microphone and a 1-year parts warranty.
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
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Poly CS540A Black
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HP Poly 85T27AA#ABA DECT 6.0 wireless technology
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HP Poly 7E2J8AA Black DECT wireless technology
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Cisco 561 Headset Black
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Poly 7320 Stereo audio configuration
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Plantronics CS540 XD Black Mono wireless headset
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| Brand | Poly | HP Poly | HP Poly | Cisco | Poly | Plantronics |
| Model | CS540A | 85T27AA#ABA | 7E2J8AA | 561 Headset | 7320 | CS540 XD |
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| Price | €246.08 | €129.37 | €287.81 | €264.29 | €303.08 | €165.51 |
| Seller | Newegg | Newegg | Newegg | Newegg | Newegg | Newegg |
| Update | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 | Nov 13, 2026 |
| Model Name | CS540A | CS540 | CS510 XD | 561 Headset | 7320 | CS540 XD |
| Part Number | 7W073AA#ABA | 85T27AA#ABA | 7E2J8AA | CP-HS-WL-561-S-US= | 7S429AA#ABA | 88283-01 |
| Product Type | Wireless headset | Wireless headset | wireless headset | wireless mono headset | wireless headset | Mono wireless headset |
| Wireless Range | 393.7 ft | 351 ft | 590 ft | |||
| Audio configuration | Monaural | Monaural | Stereo | |||
| Wireless Technology | DECT 6.0 | DECT 6.0 | DECT | DECT 6.0 | DECT 6.0 | |
| Wearing Style | Earbud, on-ear and in-ear | On-ear; over-the-head; supra-aural | Over-the-head | |||
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