The 1More SonoFlow Pro uses an over-ear fit and weighs 246 g, keeping it relatively lightweight for a full-sized headphone. It features a foldable design and comes with a travel bag, making it straightforward to pack and carry. For wired listening, a detachable, tangle-free cable measuring 1.2 m is included. The headphones have a closed-back construction with stereo speakers, and they are not designed specifically for children. Water resistance is not provided.
The SonoFlow Pro is equipped with active noise cancellation alongside passive noise reduction, addressing unwanted ambient sound through both electronic and physical means. Its 40 mm drivers cover a frequency range of 20 Hz to 40000 Hz, with an impedance of 32 Ohms and a sound pressure level of 98 dB/mW. The drivers do not use a neodymium magnet, and spatial audio is not supported.
The SonoFlow Pro houses an 800 mAh built-in rechargeable battery that is not removable and does not support wireless or solar charging. It delivers up to 100 hours of playback in standard mode, dropping to 65 hours when ANC is active. Charging is handled via USB Type-C and takes approximately 1.33 hours to complete. A battery level indicator is included to keep track of remaining charge.
The SonoFlow Pro supports both wireless and wired connectivity, using Bluetooth 5.4 with a maximum range of 10 m and an audio latency of 80 ms. Among wireless codecs, LDAC and AAC are supported, while aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, LDHC, and Bluetooth LE Audio are not. Auracast is likewise absent, and the headphones do not offer fast pairing or NFC-based pairing.
The SonoFlow Pro includes a noise-canceling microphone and can function as a headset for calls. An ambient sound mode lets environmental audio through when needed. Controls are handled via an on-device panel, while an in-line cable control is not provided. The headphones support multipoint connection for up to two devices simultaneously, though in/on-ear detection for automatic pause is not available.