The Sennheiser Momentum Sport use an in-ear fit and are fully wireless, with no neckband or cables of any kind. They weigh just 12.8 g and include wingtips to help maintain a stable fit during wear. Rated IPX4 and IPX5, the earbuds offer sweat resistance, making them suitable for active use. Each earbud houses a stereo speaker, and the design does not incorporate a neckband.
The Sennheiser Momentum Sport support both active noise cancellation and passive noise reduction, giving wearers two layers of isolation from surrounding sound. Audio is delivered through a 10 mm driver unit with a frequency range spanning 15 Hz to 18,000 Hz and a sound pressure level of 110 dB/mW. The earbuds do not use a neodymium magnet in their driver configuration.
The Sennheiser Momentum Sport are equipped with a rechargeable battery offering 5.5 hours of playback per charge, with the charging case extending total availability to 18.5 hours. A full charge takes 1.5 hours, and the earbuds support wireless charging alongside a battery level indicator so users can keep track of remaining power.
The Sennheiser Momentum Sport connect wirelessly via Bluetooth 5.2 with a maximum range of 40 m, and support the aptX Adaptive, aptX, and AAC audio codecs. LDAC, LDHC, aptX HD, aptX Low Latency, aptX Lossless, and aptX Voice are not supported. Pairing is handled over Bluetooth without NFC or fast pairing functionality, and the earbuds use USB Type-C for wired charging.
The Sennheiser Momentum Sport include an ambient sound mode, a mute function, voice prompts, and a body temperature sensor, and they can be used as a headset for calls. Controls are handled via a panel placed on the device itself, with no in-line control panel on a cable. Multipoint connectivity allows simultaneous pairing with up to two devices, and fast charging is supported for quick top-ups. The earbuds do not feature automatic in-ear detection or a find-my-earbuds function, but a travel bag is included in the box.
The Sennheiser Momentum Sport feature a 6-microphone array with noise cancellation for clearer call quality in demanding environments. The microphones cover a frequency range of 100 Hz to 10,000 Hz, providing a workable pickup range for voice transmission.
The Sennheiser Momentum Sport include a built-in heart rate monitor, adding a biometric tracking capability to the earbuds' feature set.