Codec support is where these two earbuds diverge most sharply. Both carry AAC as a baseline, but the Soundpeats H3 goes considerably further, adding LDAC, aptX Adaptive, aptX, and aptX Lossless to its arsenal. These codecs enable significantly higher-bitrate audio transmission over Bluetooth — LDAC in particular can stream at up to three times the data rate of AAC, and aptX Lossless theoretically allows CD-quality wireless audio. For listeners with high-resolution music libraries or lossless streaming subscriptions, this is a tangible, audible difference — provided their source device supports the matching codec. The Sony WF-C710N offers no such options beyond AAC, which imposes a ceiling on wireless audio quality regardless of the source.
The H3 also runs on the slightly newer Bluetooth 5.4 versus the Sony's 5.3, though in practice the real-world difference between these two adjacent versions is minimal for most users. Both products share identical 10 m wireless range, USB-C charging, and the absence of NFC pairing. The Sony does recover one convenience point with fast pairing support, which allows quicker initial setup with compatible devices — something the H3 lacks.
Taken together, the Soundpeats H3 holds a clear and meaningful advantage in this category. Its breadth of high-fidelity codec support makes it the stronger choice for audio enthusiasts, Android users with compatible devices, or anyone invested in lossless streaming. The Sony's fast pairing is a minor convenience perk, but it does not offset the H3's substantially richer connectivity and audio transmission capabilities.