The Sony LinkBuds Open feature an open-ear fit and a fully wireless design with no neckband, cables, or wingtips. They weigh just 10.2 g and include stereo speakers, making them a compact listen-through option for daily wear. The earbuds carry an IPX4 ingress protection rating, meaning they are sweat resistant, though they lack RGB lighting, a UV light, and a display. Neckband construction is not part of the design.
The Sony LinkBuds Open use an 11 mm driver unit backed by a neodymium magnet, covering a frequency range of 20 Hz to 20,000 Hz. The earbuds do not include active noise cancellation or passive noise reduction, and there is no support for spatial audio, Dolby Atmos, or Dirac Virtuo.
The Sony LinkBuds Open offer 8 hours of battery life on a single charge, with the charging case providing an additional 14 hours of total use. The rechargeable battery reaches a full charge in 1.5 hours, and a battery level indicator is included to keep track of remaining power. Wireless charging and solar battery functionality are not supported.
The Sony LinkBuds Open connect wirelessly with a maximum Bluetooth range of 10 m and support the AAC codec for audio transmission. Charging is handled via USB Type-C, though wireless charging is not available. The earbuds do not support fast pairing, NFC pairing, or Auracast, and none of the aptX codec variants — including aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, or aptX Voice — are included. Bluetooth LE Audio and LDHC are likewise absent from the feature set.
The Sony LinkBuds Open support multipoint connection to two devices simultaneously and include fast charging for added convenience. They can be used as a headset and feature a mute function, voice prompts, and a device-based control panel, while an in-line control panel is not present. A find device feature helps locate misplaced earbuds, and a travel bag is included in the box. The earbuds do not offer ambient sound mode, in-ear detection for auto-pause, notification reading, a body temperature sensor, or a built-in camera remote shutter.
The Sony LinkBuds Open are equipped with a noise-canceling microphone, which helps reduce unwanted background sound during calls and voice interactions.