The QCY H3 Pro uses an over-ear fit and weighs 231 g, making it a moderately sized closed-back headphone with stereo speakers. It can be folded, which helps reduce its footprint when not in use, and the cable is both detachable and tangle-free, adding a degree of flexibility in how it is carried or stored. No travel bag is included, and the headphones offer no water resistance, so they are better suited to indoor or sheltered environments. They are not designed specifically for children.
The QCY H3 Pro is equipped with a 40 mm driver unit covering a frequency range from 20 Hz to 40,000 Hz, paired with a 32-ohm impedance and a sound pressure level of 112 dB/mW. It features both active noise cancellation and passive noise reduction, addressing unwanted ambient sound through two separate mechanisms. The headphones also support spatial audio, broadening the perceived soundstage beyond standard stereo playback. The drivers do not use a neodymium magnet.
The QCY H3 Pro houses a built-in 550 mAh rechargeable battery that delivers up to 55 hours of playback, dropping to 40 hours when active noise cancellation is enabled. It charges fully in around 2 hours via USB Type-C and includes a battery level indicator so the remaining charge is always visible. The battery is neither removable nor wirelessly chargeable, and there is no solar charging option.
The QCY H3 Pro supports both wireless and wired connectivity, using Bluetooth 5.4 with a maximum range of 10 metres and an audio latency of 60 ms. Among the supported codecs, LDAC and AAC are available, while aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, and LDHC are not. Bluetooth LE Audio and Auracast are likewise absent. The headphones do not offer fast pairing or NFC-based pairing, so connections are established through the standard Bluetooth pairing process.
The QCY H3 Pro includes three microphones with noise cancellation, making it usable as a headset for calls and voice communication. It features an ambient sound mode for situational awareness and supports multipoint connection to two devices simultaneously, allowing it to stay paired with two sources at once. Controls are placed directly on the headphone unit rather than on an in-line cable panel, though there is no mute function available. The headphones do not offer in/on-ear detection, so playback does not pause automatically when removed.