Sennheiser Momentum 4 Wireless vs Nothing Headphone (a)

The Sennheiser Momentum 4 is the safer pick for most people: mature adaptive ANC, a 60-hour battery, a hard case, and a long track record with owners who praise comfort and sound. The Nothing Headphone (a) is the bolder choice: Bluetooth 5.4, LDAC, IP52 dust and splash resistance, tactile buttons, and a claimed 75 hours with ANC on. Build quality favors Sennheiser's memory-foam and fold-flat design; Nothing's transparent polycarbonate and stainless arms look distinctive but weigh more at 310g. Neither is a workout headphone in the strict sense, but only the Nothing carries a water and dust rating.

• Choose the Sennheiser Momentum 4 if you want proven adaptive ANC, a hard carry case, and the longest real-world battery for commuting, flights and office use.
• Choose the Nothing Headphone (a) if you want LDAC, IP52 splash resistance, physical buttons and a newer Bluetooth version for gym and outdoor use.