The Fresh 'n Rebel Clam Fuse uses an over-ear fit with a closed-back design and stereo speakers, oriented toward passive sound isolation rather than an open, airy soundstage. It can be folded, which helps with storage and portability, though no travel bag is included. The headphone is not designed for kids and carries no water resistance rating, so it offers no protection against moisture. Its cable is non-detachable and not tangle-free, and the product is not marketed toward children.
The Clam Fuse includes both active noise cancellation (ANC) and passive noise reduction, providing two independent means of limiting unwanted ambient sound. The passive isolation comes from the physical over-ear design, while ANC works electronically to attenuate external noise. Spatial audio is not supported, and the drivers do not use a neodymium magnet.
The Clam Fuse is equipped with a built-in rechargeable battery that is not removable, offering up to 45 hours of playback under standard conditions, which drops to 35 hours when active noise cancellation is enabled. A full charge takes 2 hours, and a battery level indicator is included so users can monitor remaining power. The headphone does not support wireless charging or solar charging, and it charges via a connector that is not USB Type-C.
The Clam Fuse supports both wireless and wired connectivity, with the wireless side handled by Bluetooth 5.3 at a maximum range of 10 meters. It does not support any advanced audio codecs — aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, AAC, LDAC, and LDHC are all absent — meaning audio is transmitted using the standard SBC codec only. Bluetooth LE Audio and Auracast are likewise not supported, and there is no fast pairing or NFC-based pairing available.
The Clam Fuse can be used as a full headset, aided by a noise-canceling microphone for clearer call audio. Controls are handled through an on-device panel directly on the headphone, with no in-line control option on the cable. It also features ambient sound mode, allowing users to let in environmental audio without removing the headphones, and in/on-ear detection that can automatically pause playback when the headset is taken off. A dedicated mute function is not included.