The QCY Crossky C30 feature an open-ear fit and a true wireless design with no cables between the earbuds or to any device. Each earbud weighs 10 g, keeping the overall setup light during use. Stereo speakers are present on both sides, while neckband construction, wingtips, RGB lighting, a UV light, and a display are all absent from this model.
The QCY Crossky C30 use a 10.8 mm driver unit and cover a frequency range of 20 Hz to 20,000 Hz. The earbuds do not include active noise cancellation or passive noise reduction, meaning they do not block out environmental sound by design. Spatial audio, Dolby Atmos, Dirac Virtuo, and a neodymium magnet are also not part of this model's audio configuration.
The QCY Crossky C30 offer 5 hours of battery life per charge, with the included charging case extending total playback to 25 hours. The earbuds carry a 32 mAh rechargeable battery and reach a full charge in approximately 2 hours. A battery level indicator is present to keep track of remaining charge, while wireless charging and solar power are not supported.
The QCY Crossky C30 connect wirelessly via Bluetooth 5.4 with a maximum range of 10 m, and support the AAC codec for audio transmission. USB Type-C is used for wired charging, though fast pairing and NFC pairing are not available. On the codec side, the earbuds do not support LDAC, LDHC, any variant of aptX, Bluetooth LE Audio, or Auracast.
The QCY Crossky C30 support multipoint connection to two devices simultaneously and can be used as a headset, with a mute function and voice prompts included for call and usage convenience. Fast charging is supported, and controls are handled via a panel placed on the device itself rather than an in-line remote. A travel bag is included in the package. The earbuds do not offer ambient sound mode, in-ear detection for auto-pause, a find device feature, notification readout, a body temperature sensor, or a built-in camera shutter remote.
The QCY Crossky C30 are equipped with 4 microphones and include noise-canceling microphone technology to help reduce unwanted background sound during calls and voice interaction.