Your next buying step
Sennheiser CX SPORT
Model: CX SPORT 508256 · US configuration
Your choices from the finder
Review the product, then choose a seller
Compare offers for this model
Assessment scenario: the earlier CX SPORT U.S. article 508256 is a sealed-tip Bluetooth neckband with no documented ANC, a Micro-USB charge input and no charging case. Its manual lists SBC, AAC, aptX and aptX Low Latency; the six-hour maximum is A2DP music, not ANC playback, and present battery health is unknown.
Search this model on Amazon ↗Search results may include other models. Confirm the exact model, size and included accessories before ordering.
As an Amazon Associate I earn from qualifying purchases. Buying links on BuyerShortlists may be affiliate links.
Assessment scenario: Earlier sealed SBC neckbands without ANC
An editorial assessment scenario for someone who permits earlier models, wants a sealed in-ear fit, excludes active ANC and selects SBC over Classic Audio. It is not a statement of the visitor’s intent, a fit guarantee or evidence of live availability.
Explore this buying guide ↗Why consider this model?
- Sennheiser’s U.S. page identifies CX SPORT article 508256 as an in-ear wireless neckband and marks it end of life. The exact page says sweat and splash resistant; the maker’s original product image matches the single article but does not show a resale carton or condition.
- The targeted CX SPORT manual lists ear-canal coupling, four XS/S/M/L adapters and three S/M/L ear fins, plus a cable organizer and clip. These are original maker-package details and do not establish that an individual offer still contains every size or that they fit a particular shopper.
- Sennheiser’s launch note says up to two devices can connect simultaneously. The manual lists SBC, AAC, aptX and aptX LL; codec negotiation depends on the host, and the checked sources do not claim two concurrent audio streams.
- The exact-model manual’s up-to-six-hour figure is A2DP music and its 8.5-hour figure is HFP talk. It documents no active ANC or ANC-on runtime; neither original figure measures an older offered unit.
Tradeoffs to weigh
- The U.S. product page labels CX SPORT end of life; current seller availability, unit condition and battery health are unverified.
- No standardized IPX4 or IP57 rating was found. The product page’s sweat/splash wording does not supersede the manual’s keep-dry guidance or establish swimming/submersion protection.
- The earpieces are connected by a neckband cable; there is no charging case. The headset itself charges through Micro-USB rather than a case-charging method.
- Two host connections do not prove two simultaneous audio streams. No codec-specific runtime or ANC music duration is documented.
Check these before ordering
- Confirm the exact Sennheiser CX SPORT name and U.S. article 508256; do not substitute CX True Wireless 508973, CX 150BT 508380 or CX 350BT 508382 by similar CX naming.
- Ask for a package photo and check both connected earbuds, cable/inline controls, Micro-USB charging, the tips/fins you need, clothing clip and storage pouch. The manual’s original box list does not establish the contents of a resale offer.
- Confirm the older battery still charges and pairs and review the seller’s exact condition, return and warranty terms; the original six-hour music figure is not evidence of present battery capacity.
- Check the source device’s codec support and connection switching behavior. Do not buy on the assumption that two connected devices can stream audio concurrently or that aptX Low Latency is available from every phone or computer.