Samsung Galaxy Buds3 (SM-R530) / Sony LinkBuds Fit (WF-LS910N)

The open design does not seal the ear canal, so it avoids a pressure feeling over long use but isolates less than tipped models. Fit varies with ear shape.

The VPU picks up the wearer’s voice through bone vibration to help separate speech in noisy calls.

ANC measures outside sound with microphones and produces an opposite wave to reduce steady hum; in an open design the effect is more limited than in sealed earbuds.

Personal NC Optimiser tunes cancellation to the ear shape and how the buds are worn. Auto Ambient Sound changes how much outside sound is let in depending on the surroundings.

UHQ (24-bit/96 kHz) only works on certain Galaxy phones and tablets with One UI 6.1.1 or later (S24, S23, Z Fold6/Flip6, Z Fold5/Flip5, Tab S9 series); 24-bit Hi-Fi needs One UI 4.0 or later. Other devices use AAC or SBC.

Samsung Seamless Codec (SSC) is Samsung’s own codec for higher-resolution wireless audio with Samsung devices. Auto Switch moves the connection between signed-in Galaxy devices automatically.

The SWIR infrared sensor detects whether an earbud is worn; the Hall sensor detects the case opening and closing.

These are Samsung’s internal tests with default settings paired to a Galaxy phone. Capacity is 48 mAh per earbud and 515 mAh in the case (typical).

IP57 means dust-protected and resistant to brief immersion; the charging case is not covered.

Some features are not available on non-Samsung devices.

LC3 and profiles such as TMAP/CSIP are for Bluetooth LE Audio, enabling lower-power audio on compatible phones. LDAC is used on Android for high-bitrate streaming; iPhones use AAC.

DSEE Extreme tries to restore high-frequency detail lost in compressed music files.

The soft supporter fin rests against the ear’s ridge to help keep the bud in place while moving.

IPX4 means resistance to splashing water from any direction; it is not for submersion or swimming.