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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want serious active noise cancelling and a proper, feature-packed everyday earbud for adults, choose CMF BY NOTHING Buds 2a; if you need safe, volume-limited open-ear headphones built for kids and teens, choose iDIGMALL Kids.
These two look like they belong in the same shopping cart, but they solve completely different problems. One is a grown-up noise-cancelling earbud with a tuning partnership and an app full of controls. The other is a child-first clip-on designed to keep ears open, volume capped and parents calm. If what you actually care about is the mic — wireless headphones with an ENC mic for calls — both of them have one, and that's where the comparison gets interesting.
• CMF BY NOTHING Buds 2a — biggest strength: 42dB hybrid ANC, a 12.4mm dynamic driver co-tuned with DIRAC, and a quad-mic ENC setup with wind-noise reduction for calls.
• CMF BY NOTHING Buds 2a — biggest trade-off: These are in-ear buds with no volume cap and no kid-safety design, so they're simply not built for young children.
• iDIGMALL Kids — biggest strength: An open-ear clip design with a factory-set 85dB volume limit and dual HD mics with ENC — safety first, calls second.
• iDIGMALL Kids — biggest trade-off: No active noise cancelling at all, and only 5 hours of playtime per charge (20 extra hours from the case).
• Pick CMF BY NOTHING Buds 2a if you're an adult who wants noise cancelling, bass and a full app of customization.
• Pick iDIGMALL Kids if you're buying for a child or teen and hearing protection matters more than immersion.
The Buds 2a is the more ambitious product of the two, and the spec sheet shows it. The headline is 42dB smart active noise cancelling — a hybrid ANC system that the brand describes as tuned for everyday scenarios rather than extremes. Behind it sits a 12.4mm bio-fiber dynamic driver co-tuned with DIRAC, with a frequency range of 20Hz to 2900Hz and 32 ohm impedance. In plain terms: this is a bass-forward, warm-sounding earbud meant for commutes, gym sessions and long listening sessions, not a flat studio monitor.
For anyone who takes calls, the mic story is the real selling point. Quad HD ENC mics combine "Clear Voice Tech" with Wind Noise Reduction 2.0, and Bluetooth 5.4 handles the connection with Google Fast Pair and Microsoft Quick Switch. There's also dual-device connectivity, so you can hop between a laptop and a phone without re-pairing. Battery is rated at 8 hours per charge and 35.5 hours with the case, and a 5-minute quick charge is quoted at up to 2 hours of playback — genuinely useful when you've forgotten to plug in.
Who should buy it: adults and teens who want ANC, strong bass, a reliable call mic and app-based control (custom EQ, adjustable ANC levels including transparency mode, find-my-earbuds, low-lag gaming mode). The IP54 rating and lanyard-ready case make it a reasonable gym and travel companion. Who should skip it: anyone shopping for a young child. There's no volume limit, it's an in-ear design, and the age range is listed as "All" — but nothing about it is child-specific.
The iDIGMALL T506 is designed around one idea: protect young ears. The 85dB volume cap is factory-set and matches the commonly recommended ceiling for children's listening, and the open-ear clip-on shape means the ear canal stays unblocked. That matters for two reasons — kids can still hear traffic, teachers and parents while wearing them, and there's no in-ear pressure or eardrum risk from prolonged loud listening. Sound is deliberately tuned for clear vocals with gentle highs, so spoken content like lessons and stories stays intelligible.
The fit is the other thoughtful part. Each earbud weighs just 5 grams, uses soft silicone with a C-shaped arm, and clips over the ear rather than into it — which also means no hair tugging. Bluetooth 5.4 covers pairing with phones, tablets, laptops and smartwatches, with a 10-meter range and one-step auto-pairing once the initial connection is made. Touch controls handle music, volume, calls and the voice assistant.
The mic setup is dual HD mics with ENC noise reduction, so calls are clear enough for a kid checking in with a parent. Battery is where it's more modest: 5 hours per charge, plus a 300mAh case that adds around 20 hours and recharges fully in about 1.5 hours over USB-C. Who should buy it: parents of children aged 3 and up, especially for school, travel, sports and outdoor play. Who should skip it: anyone who wants noise cancelling or deep bass — there is none, by design.
• Best for noise cancelling → CMF BY NOTHING Buds 2a. 42dB hybrid ANC versus none at all on the iDIGMALL.
• Best for hearing safety → iDIGMALL Kids. The 85dB factory limit and open-ear design are the entire point of the product.
• Best for call clarity on paper → CMF BY NOTHING Buds 2a. Quad HD ENC mics plus Wind Noise Reduction 2.0 outspec the iDIGMALL's dual HD ENC mics.
• Best for battery life → CMF BY NOTHING Buds 2a. 8 hours per charge and 35.5 hours with the case, against 5 and roughly 25 hours combined.
• Best for charging speed → iDIGMALL Kids. A 1.5-hour full case charge beats the Buds 2a's 89-minute case charge in practice, since the iDIGMALL's case is smaller.
• Best for comfort over long sessions → depends on the wearer. 5g open-ear clips suit kids and people who dislike in-ear pressure; the Buds 2a's multiple ear-tip sizes suit adults who want isolation.
• Best for app control and customization → CMF BY NOTHING Buds 2a. Custom EQ, adjustable ANC levels, gaming low-lag mode and dual-device pairing.
• Best for a child's first pair → iDIGMALL Kids. Listed for ages 3+, silicone build, no in-ear insertion, no volume risk.
In my opinion, the decision comes down to who's wearing them, not which one is "better." For myself, I'd buy the CMF BY NOTHING Buds 2a — the ANC, the bigger driver, the quad-mic call setup and the app control make it the more capable product for adult daily use. If I were buying for a child, I'd pick the iDIGMALL Kids without hesitation, because the 85dB cap and open-ear design are safety features you can't retrofit onto a normal earbud. Match the product to the ear, and you'll be happy either way. Check the current price on Amazon before you commit.
No. Bluetooth audio profiles are separate — a headphone can support high-quality music playback without offering a usable mic for calls. Both products here do include built-in microphones: the Buds 2a uses quad HD ENC mics, and the iDIGMALL Kids uses dual HD mics with ENC.
can you use bluetooth headphones as a mic
Yes, if the model has a built-in mic and your device supports the hands-free profile. Both of these pair over Bluetooth 5.4 and are listed with built-in microphones, so they can serve as a mic for calls and voice chat on phones, tablets and computers.
how to use mic on wireless headphones
Pair the earbuds to your device, then select them as both the output and input device in your sound settings. On a PC, that usually means choosing the headset entry rather than the stereo headphones entry, since only the hands-free profile carries microphone audio.
how to use wireless headphones mic on pc
Connect over Bluetooth, open your operating system's sound settings, and set the input device to the earbuds' headset/hands-free option. If the mic doesn't appear, remove and re-pair the device — the Buds 2a's Microsoft Quick Switch and the iDIGMALL's one-step pairing both make reconnecting straightforward.
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See also: Razer Barracuda X Chroma vs CMF BY NOTHING Buds 2, CMF BY NOTHING Buds vs Avantree SoundJet R1&: Hybrid ANC, Yworlln NE76 vs Owliwise Kids Headphones: Wireless Travel