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Sennheiser CX True Wireless (Black)
Model: CX True Wireless Black 508973 · US configuration
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The reviewed Black 508973 is an earlier sealed-tip model with no ANC, IPX4 earbuds-only protection and a USB-C wired-only case. Sennheiser marks the model end-of-life; the historical facts do not establish any offer's availability, battery condition or completeness.
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Assessment scenario: Earlier sealed no-ANC earbuds with IPX4 buds and wired case
An editorial scenario for an earlier sealed in-ear configuration without ANC, with the exact IPX4-headset-only boundary and a USB-C case confirmed to lack wireless charging. This describes published model facts, not a visitor’s intent, personal fit, present offer or older-battery condition.
Explore this buying guide ↗Why consider this model?
- Sennheiser's CX200TW1 FAQ and manual document a sealed tip arrangement with four included adapter sizes (XS/S/M/L); personal fit is not predictable from the page.
- The manufacturer FAQ confirms no ANC, SBC/AAC/aptX, one connected device at a time, IPX4 earbuds only, and USB-C charging without wireless case charging.
- The official U.S. page identifies Black article 508973 and says the model is end-of-life; this is a reference assessment, not evidence of an available or suitable listing.
Tradeoffs to weigh
- The up-to-nine-hour general playback claim is not codec-specific and is not an ANC runtime; the 27-hour total includes case charging.
- The case is not splash resistant; do not submerge, rinse, shower with, or charge wet earbuds.
- Batteries are not replaceable; actual remaining capacity, seller condition, warranty and returns for any particular offer are unknown.
- Sennheiser's U.S. product page identifies the model as end-of-life; do not infer new stock or seller support.
Check these before ordering
- Match Black article 508973 and a complete CX200TW1 R/L pair with CX200TW1 C charging case; do not mistake article 509113 or 509114 replacement buds for a complete pair.
- Confirm that a listing is not one of the separate replacement-case or individual-earbud accessory pages; their parts and compatibility statements differ.
- Check the seller's stated battery condition, return/warranty policy and package contents. These were not checked for any offer.
- Use a USB-C cable for the case and keep the case dry; IPX4 is earbuds-only and is not waterproofing.
- Confirm the playback-device codec support and whether switching one connected device at a time is acceptable.