If you want long listening between charges and an in-ear fit, choose AWEI Earbuds; if you need an open-ear design that leaves you more aware of your surroundings, choose Monster Open Ear AC339. For teens, I’d make the fit and listening style the deciding factors: AWEI emphasizes battery endurance, while Monster offers a clip-over, open-ear alternative.
• AWEI Earbuds: Up to 9 hours of use per charge, with up to 54 hours of music time by alternating earbuds in single-ear mode; the trade-off is an in-ear design that does not keep the ear open.
• Monster Open Ear AC339: Open-ear clip-over fit, IPX6 water resistance, and a battery-level display; the trade-off is up to 40 hours of playback rather than AWEI’s longer single-ear figure.
• Choose AWEI if you want in-ear earbuds, touch controls, and a long-use setup with a charging case.
• Choose Monster if an open-ear fit, awareness of nearby sounds, and a visible battery indicator matter more.
• For teens: AWEI suits someone who prioritizes extended music time; Monster suits someone who prefers not to seal or fill the ear canal.
AWEI is the more conventional wireless-earbud choice here. Its semi-in-ear design has rounded tips and soft silicone ear caps, while its dynamic 8 mm speakers are specified for a 20 Hz–20,000 Hz frequency range. The product information also lists Bluetooth 5.3 and a wireless range of up to 10 m. In everyday terms, that gives a teen a straightforward option for listening on a phone, tablet, computer, or TV without a headphone jack, since the connection is wireless Bluetooth.
Battery life is the clearest reason to consider AWEI. Each earbud is specified for up to 9 hours of continuous use. With the charging case, dual-ear listening is listed at up to 36 hours, while alternating between the left and right earbuds in single-ear mode is listed at up to 54 hours of music time. Those figures describe different listening setups, so I would not treat 54 hours as the expected runtime for a single uninterrupted session with both earbuds in use. The case charges through USB-C and is specified to fully charge in 1.5 hours.
AWEI also provides dual-ear touch controls for functions such as playback, volume, track selection, and call handling. Its stated IPX6 rating, plus the claimed dust- and rain-resistant design, makes it relevant for ordinary sweaty or wet-weather use. That makes it a reasonable candidate for someone searching for the best sweat resistant headphone for teens, provided they understand that IPX6 water resistance is not a promise that earbuds can be submerged. Clear-call performance is a stated feature, and there is a built-in microphone, but the sheet does not give microphone measurements or a call-performance test.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-23 · 8 min read · Independent comparison
Who should skip it: Skip AWEI if you specifically want an open-ear clip design or want to keep your ears unobstructed while listening.
Monster takes a different approach: the AC339 is an open-ear earbud with a clamp-over design, rather than an in-ear pair with silicone tips. The stated aim is a snug fit without added pressure, and the open design is intended to let the wearer remain aware of nearby sounds. For a teen who listens while moving around the house, walking, or doing other activities where hearing the environment matters, that design may be the main attraction. It is also the more direct choice for anyone who dislikes the feeling of an in-ear earbud.
The AC339 uses Bluetooth 5.4 and touch controls. Its listed controls include managing music and handling calls, as well as accessing a voice assistant. The product information identifies dynamic drivers, but it does not provide a driver size or frequency range, so there is less specific audio hardware detail to compare with AWEI. Monster describes the sound as clear and immersive, but the sheet does not quantify sound quality or establish that it will outperform an in-ear model.
Monster specifies up to 40 hours of playback and includes a digital display that indicates remaining battery level. That indicator can help a teen see when the earbuds need attention instead of relying only on memory. The AC339 is also rated IPX6 for water resistance, which makes it relevant for sweat and wet conditions. Its stated battery figure is substantial, but the product details do not break it down into per-charge listening time and case-supported total time in the same way AWEI’s features do. The battery information is therefore not a direct apples-to-apples comparison.
Who should skip it: Skip Monster if you want a traditional in-ear fit, or if the longest stated total music time is your primary deciding factor.
• Best for the longer stated music-time figure → AWEI Earbuds. It lists up to 54 hours when alternating earbuds in single-ear mode with the case, and up to 36 hours in dual-ear mode.
• Best for open-ear listening → Monster Open Ear AC339. Its clip-over design does not sit in the ear in the same way as AWEI’s semi-in-ear buds.
• Best for a specified listening session per charge → AWEI Earbuds. The sheet gives up to 9 hours of continuous use per charge, while Monster’s battery details do not provide an equivalent breakdown.
• Best for checking remaining battery at a glance → Monster Open Ear AC339. Its digital display is specifically described as showing battery level.
• Best for detailed Bluetooth range information → AWEI Earbuds. AWEI lists Bluetooth 5.3 and a range of up to 10 m; Monster lists Bluetooth 5.4 but does not specify range.
• Best for touch controls with track and volume functions spelled out → AWEI Earbuds. Its listed controls cover volume, previous or next track, playback, and call handling.
• Best for an open design during exercise or movement → Monster Open Ear AC339. The open-ear fit is designed to keep the wearer more aware of their surroundings, and the product is rated IPX6.
• Best for teens seeking wireless Bluetooth earbuds with an in-ear fit → AWEI Earbuds. Its case-supported listening figures and silicone-tipped design make it the more familiar earbud-style option.
Buying Considerations
For a teen, comfort is personal, and these products solve that problem in different ways. AWEI has a semi-in-ear shape with rounded tips and silicone ear caps. Monster uses a clamp-over open-ear design intended to avoid pressure inside the ear.
Both models list IPX6 water resistance, so that specification alone does not distinguish them for sweat or rain exposure. It does not mean either product is waterproof for swimming or submersion. Battery figures deserve a closer look too: AWEI separates per-charge use from case-supported total playback, whereas Monster lists up to 40 hours and a battery-level display without the same breakdown. If the teen often forgets to recharge, Monster’s display may be useful; if stretching listening time between charging opportunities is the priority, AWEI’s figures are more detailed and higher in its single-ear setup.
A shopper looking for the best with microphone earphones for teens should note that AWEI specifically lists clear-call performance and a built-in microphone. That makes AWEI the more clearly documented pick for calls, not proof that its call audio will be better in every setting.
If price matters to your decision, check the current price on Amazon using the page’s price button. The specifications alone do not establish which option is the better value for your budget.
In my opinion, I’d choose AWEI Earbuds for a teen who wants an in-ear fit, clearly described call features, and the longer stated music-time option. Its up-to-9-hour per-charge figure and case-supported listening modes are useful strengths, with the important caveat that the longest figure relies on alternating earbuds in single-ear mode. I’d choose Monster instead when open-ear awareness and a battery display matter more than AWEI’s longer stated total. For teens who want the more versatile battery setup, my pick is AWEI.
AWEI is the stronger fit for teens who want semi-in-ear earbuds and detailed battery options. Monster is more suitable for someone who prefers an open-ear clip-over design and wants a battery-level display.
AWEI lists up to 9 hours per charge, up to 36 hours in dual-ear mode with the case, and up to 54 hours in single-ear mode when alternating earbuds. Monster lists up to 40 hours of playback. The figures are described differently, so they are not a direct like-for-like test.
Both are specified as IPX6 water-resistant, making them relevant for sweat and wet conditions. That rating does not mean either pair should be submerged or used for swimming.
AWEI specifically describes clear-call performance and includes a built-in microphone. Monster lists call controls, but the supplied specifications do not provide comparable detail about its microphone performance.
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