Sennheiser has introduced the Momentum True Wireless 5 (MTW5), a new set of wireless earbuds that include user-replaceable batteries, an updated design, enhanced noise-cancelling, and improved audio capabilities. The company has been preparing for potential European Union regulations that may require wireless earbuds to have replaceable batteries. This effort began with the launch of the Momentum True Wireless 4 over two years ago. While other manufacturers have expressed concerns about the impact of such regulations on device size and water resistance, Sennheiser has moved forward with its plan, integrating replaceable batteries into the MTW5. The MTW5 features a refined, premium design, improved noise-cancelling and transparency modes, and enhanced sound quality. Additional features include Dolby Atmos spatial audio, which creates a more immersive listening experience, and aptX Lossless high-resolution streaming, which provides clearer audio. The earbuds are priced at $300 / £250 / AU$499, placing them in direct competition with flagship models from Apple, Sony, Bose, and other major brands. Sennheiser emphasizes the user-replaceable battery feature as a key innovation, which allows for a longer product lifespan and reduces electronic waste. The company includes a battery replacement tool in the case and provides instructions for replacing both the earbud and case batteries using a small screwdriver. The MTW5 includes 7mm dynamic drivers for sound production, Bluetooth 6.0 connectivity for faster and more stable wireless performance, up to 12 hours of playback per earbud (40 hours total), and IP54 water resistance, which protects against sweat and light rain. The earbuds support seamless multipoint switching, allowing them to connect to multiple devices at once, and offer head-tracked Dolby Atmos spatial audio for a more immersive experience. Future firmware updates will also support LE audio and Auracast, which enable broadcast-style audio sharing. While the noise-cancelling performance is described as effective, it is slightly behind the top offerings from Apple, Bose, and Sony. The transparency mode is praised for its natural reproduction of ambient sounds. Sound quality from the MTW5 is characterized as neutral, with a wide soundstage and excellent detail, offering warmth that appeals to serious listeners. A customizable sound profile is available through the Smart Control Plus app, allowing users to tailor the audio to their preferences. The earbuds are noted for their comfort and fit, though the new design may feel bulkier for users with smaller ears. The MTW5 is available in multiple colors, including Graphite, Copper, Denim, Lavender, and Cream. Sennheiser positions the MTW5 as a premium option that offers long-term usability, with replaceable batteries potentially extending the product's lifespan beyond five years. While the earbuds may not be the best choice for users prioritizing the absolute best noise-cancelling performance or those on a budget, they are reviewed as a strong contender in the wireless earbuds market, offering a balance of sound quality, design, and sustainability.