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Samsung Galaxy Buds4 Pro (Black)
Model: SM-R640NZKAXAR · US configuration
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An assessment scenario for the Black Galaxy Buds4 Pro, US model SM-R640NZKAXAR: a sealed in-ear ANC model whose case supports wireless charging. It does not represent a visitor's actual preference.
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Assessment scenario: Sealed in-ear listening with active noise cancellation
An editorial assessment scenario for a shopper who prioritizes a sealed in-ear fit and active noise cancellation. This is not a statement of the visitor's intent.
Explore this buying guide ↗Why consider this model?
- Samsung identifies three supplied tip sizes and an active ANC mode, so this configuration is a documented sealed-fit/ANC candidate.
- Samsung describes a two-way speaker, dual amplifiers and supported Galaxy UHQ for selected compatible hosts; these are hardware/ecosystem differences, not a universal sound-quality ranking.
- The case supports USB-C and wireless charging, and the product source specifies that IP57 applies to the earbuds only.
Tradeoffs to weigh
- The case is not water resistant; IP57 does not apply to it and is not waterproofing.
- Samsung's six-hour ANC-on music maximum is not broken out by codec, so this scenario does not promise six hours while using any specific codec.
- UHQ and Auto Switch require compatible Galaxy devices/account setup; Auto Switch is not documented as two-device multipoint. The pad, USB-C cable and charger are not included.
- No hands-on fit, comfort, sound, ANC, call or battery testing was performed.
Check these before ordering
- Match Black SM-R640NZKAXAR exactly; do not substitute Buds4, Buds3 FE or an accessory case.
- Check the seal and return period separately for both ears.
- Verify your exact Samsung phone/tablet/software before relying on Galaxy UHQ or Auto Switch.
- Plan for a compatible wireless pad or separate cable/charger, and keep the case dry.
Manufacturer information
- Explore Galaxy Buds4 Pro | Wireless Earbuds | Samsung US
- Compare Wireless Earbuds | Samsung US
- Galaxy Buds4 Pro Black SM-R640NZKAXAR | Samsung US
- Samsung Unveils Galaxy Buds4 Series | Samsung Newsroom US
- Galaxy Buds4 series User Manual, R540/R640, English | Samsung Support Canada
- Connected Experience | Samsung US