Detailed review
Battery guidance lands at up to eleven hours in the buds and about twenty-two with the case, with a five-minute charge unlocking roughly an hour of playback. That pattern fits real mornings when you forgot to dock the case overnight. IPX4 covers sweat and splashes for brisk walks, though it is not a swim rating. Ambient Sound Mode is the safety valve when you need bus announcements or hallway conversations without pocketing a bud.
Sony leans on a light, compact fit rather than aggressive sport wings. All-day comfort claims only hold if the included hybrid silicone tips seal without hotspots—spend time tip-fitting before you blame the drivers. Button operation handles play, skip, volume, voice assistant, and calls; some users prefer buttons because accidental cheek brushes are rarer than on touch shells, while others miss swipe gestures.
DSEE upscaling targets compressed music files and streams, a practical nod to how most people actually listen rather than lossless hobbyist libraries. Call performance relies on a built-in microphone for hands-free use; it will not match six-mic AI arrays in noisier ANC models, but it covers sidewalk “I’m five minutes away” calls. The pocket-sized case is a genuine quality-of-life win compared with oversized gaming-brand cases.
Against the yellow and white WF-C510 twins later in this guide, black is the stealth office color that hides scuffs and matches dark phones. Against ANC-heavy rivals, WF-C510 trades isolation depth for comfort, brand software maturity, and straightforward multipoint. Against open-ear clips, it seals more bass but blocks more of the room.
Buy the black C510 when you want trustworthy dual-device behavior in a small, comfortable shell and can live without maximum ANC. It is the multipoint baseline the rest of the list should be measured against.
Ideal two-device pairing
Phone plus work laptop is the classic. Keep personal tablet as a third device you manually swap only when needed so multipoint stays predictable.
Tip fit before EQ blame
If bass feels thin, reseat tips before chasing DSEE settings. Seal quality changes perceived sound more than codec myths at this tier.