If you want over-ear noise cancellation and straightforward listening, choose Bose QuietComfort 35; if you need compact earbuds for exercise and a customizable fit, choose Sennheiser Momentum True. For a kid, the key distinction is simple: Bose has an over-ear design and three noise-cancellation levels, while Sennheiser has small in-ear buds, interchangeable fit pieces, and a splash-resistance rating. I’d choose based on which form is more comfortable and practical for the child’s routine.
Bose QuietComfort 35 vs Sennheiser Momentum True at a Glance
• Sennheiser Momentum True: Compact in-ear earbuds with adaptive noise cancellation, Transparency Mode, and several ear-tip and fin sizes. The trade-off is that sound and call performance depend on getting a secure fit.
• Bose suits: A listener who prefers over-ear headphones, adjustable noise cancellation, and up to 20 hours of battery life.
• Sennheiser suits: A listener who wants small wireless earbuds for sports or travel, device multipoint, and up to 28 hours of total playback with the charging case.
The Bose QuietComfort 35 II is an over-ear Bluetooth headphone with active noise cancellation that can be set to three levels. That range gives a listener options for different surroundings rather than a single fixed setting. For a kid who prefers headphones that sit around the ears instead of inside them, this design may be the more natural starting point. Its noise-rejecting dual-microphone system is intended to help with clear voice pickup, and Alexa voice access is included.
Battery life is listed at up to 20 hours. Bose also includes a 3.5 mm audio cable, so the headphones have a wired connection option as well as Bluetooth. The Bose Connect app handles setup, Bluetooth connections, noise-cancellation adjustments, and software updates. That gives families a way to manage settings from a compatible phone, though it also means some setup and personalization involve an app.
The trade-off is physical: these are over-ear headphones, not pocketable earbuds. A child who dislikes a headphone band or ear cups may find this style cumbersome, and the listed age description is adult rather than child-specific. The available details don’t give a child-fit range, so I would pay particular attention to whether the over-ear shape suits the intended wearer.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Who should skip it: Skip Bose if the child wants earbuds that stay compact in a gym bag or if an over-ear fit is uncomfortable.
The Sennheiser Momentum True Wireless 3 takes the opposite approach: separate in-ear earbuds designed for travel, sports, and exercise. Its package includes silicone ear adapters in XS, S, M, and L, plus fins in S, M, and L. Those options matter because a stable fit is central to how the earbuds feel and perform. Sennheiser specifically notes that poorly fitting tips can affect sound quality and call performance, so choosing the right combination is part of getting the most from them.
For a listener who wants to tailor sound, the earbuds offer a built-in equalizer and presets, including Bass Boost, along with sound personalization. Adaptive noise cancellation adjusts to changes in the surrounding noise, while Transparency Mode lets outside sound through when staying aware of the environment is useful. There are three noise-cancelling microphones on each earbud for voice pickup, and multipoint lets the earbuds connect to two devices.
The listed total battery life is up to 28 hours when the charging case is included; the earbuds themselves are listed for up to seven hours. The case supports Qi wireless charging. An IPX4 rating indicates splash resistance, which makes the earbuds relevant for exercise, but it is not a reason to treat them as waterproof. These features make them a compact option, but in-ear fit is personal, and the child needs to be comfortable placing and removing the buds.
Who should skip it: Skip Sennheiser if the child dislikes in-ear earbuds or is unlikely to take time to find a snug, secure tip-and-fin fit.
• Best for an over-ear fit → Bose QuietComfort 35. Its ear placement is over-ear, so it avoids putting an earbud in each ear canal.
• Best for a compact exercise option → Sennheiser Momentum True. It is an in-ear design, and sports and exercise are among its specified uses.
• Best for several noise-cancellation levels → Bose QuietComfort 35. It offers three levels, which the listener can adjust.
• Best for noise cancellation that adapts to surroundings → Sennheiser Momentum True. Its adaptive system is designed to change cancellation as environmental noise changes.
• Best for hearing some surroundings on demand → Sennheiser Momentum True. Transparency Mode brings outside sound back into the listening experience.
• Best for listening time with a charging case → Sennheiser Momentum True. Its listed total is up to 28 hours, including case charging, compared with Bose’s listed 20-hour battery life.
• Best for Alexa voice access → Bose QuietComfort 35. It supports Alexa, while Sennheiser’s listed strengths instead include an equalizer, sound presets, and two-device multipoint.
• Best for fit adjustment in the box → Sennheiser Momentum True. It includes four ear-adapter sizes and three fin sizes, though a child still needs to find a comfortable fit.
My Verdict
For a child, comfort is more important than a long feature list. The two products use distinctly different designs, and the data does not establish that either one will fit every child. If the child has a strong preference against in-ear buds, the Sennheiser’s compact shape and interchangeable tips will not overcome that. If they dislike ear cups, the Bose is unlikely to become more appealing simply because it has adjustable noise cancellation.
Consider how the headphones will be used. Bose’s over-ear design and three noise-cancellation levels make it a straightforward option for focused listening in different environments. Sennheiser offers Adaptive Noise Cancellation and Transparency Mode, which provide different ways to manage outside sound. Neither set of details establishes a child-safe volume limit, so don’t assume noise cancellation itself protects hearing or replaces sensible listening habits.
Battery figures also need a little context. Bose lists up to 20 hours of battery life, while Sennheiser lists up to seven hours for the earbuds and up to 28 hours overall when using the case. Those figures describe different configurations; the Sennheiser total includes charging on the go. Its case can be charged wirelessly with Qi, while the Bose product information lists a 20-minute charge time. If you’re comparing practical daily use, think about whether the child will remember to return earbuds to their case or prefers a single over-ear headset.
The phrase “best comfortable headset” doesn’t point to one universal winner here. Bose avoids an in-ear fit, while Sennheiser offers multiple tips and fins to help tailor the fit. Likewise, someone searching for “earphones for gym” may be drawn to Sennheiser’s exercise use case and IPX4 splash resistance. Neither detail guarantees comfort for a particular child, and splash resistance should not be confused with waterproofing.
One search phrase worth treating carefully is “best USB-C charging open-ear earbuds.” Neither product matches that description in the supplied specifications: Sennheiser is in-ear, not open-ear, and its case is listed as supporting Qi wireless charging; Bose is over-ear. If USB-C charging or an open-ear design is essential, these two are not a direct match based on the available details.
It depends on fit preference, but not on a vague feature count. Bose is over-ear and has three noise-cancellation levels; Sennheiser is in-ear and includes multiple ear-tip and fin sizes. The child’s comfort with that form should be the deciding factor.
Sennheiser lists up to 28 hours of total playback when the charging case is included, with up to seven hours from the earbuds themselves. Bose lists up to 20 hours. These figures use different charging arrangements, so the case is part of the Sennheiser comparison.
Sports and exercise are specified uses, and the earbuds have an IPX4 splash-resistance rating. Their secure fit depends on choosing suitable tips and fins. The rating does not mean they are waterproof.
Both offer noise cancellation, but they work differently. Bose provides three noise-cancellation levels; Sennheiser has Adaptive Noise Cancellation and a Transparency Mode for letting more surrounding sound through.
At the end of the day, check the current price on Amazon using the page’s button if that’s part of your decision.
• Yunsailing 30 vs ApilWave Over-Ear Headphones
• our JLab vs Praseno Bone Conduction Headph pick
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.