The MOMENTUM Free Wireless In-Ear Headphones from Sennheiser supports high-quality codecs like AAC and Qualcomm's aptX. Your hi-fi encoded audio is reproduced by the MOMENTUM's dynamic speaker system, which is meant to provide you with powerful bass and clear vocals. Your audio is then transmitted to you via custom-milled, stainless-steel sound tunnels in the earpieces. The MOMENTUM Free headphones also support aptX Low Latency, which helps to keep video and audio in sync when watching streaming videos or playing mobile games.

Your audio is received wirelessly via Bluetooth 4.2 technology when paired with compatible mobile devices, such as a smartphone or tablet. When paired with a smartphone, you can also utilize the built-in microphone to make hands-free calls. The MOMENTUM Free headphones can pair with two devices simultaneously, letting you easily switch between music and incoming calls. A built-in system of voice prompts help notify you on the MOMENTUM's pairing and battery status.