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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-05 · 6 min read · Independent comparison
• LexonElec ATTACK SHARK G300 — biggest strength: Active Noise Cancellation, a 40-hour playtime claim in the title, Bluetooth 5.3 and a 3.5 mm wired fallback, all in a 210 g over-ear frame with memory foam cushions.
• LexonElec ATTACK SHARK G300 — biggest trade-off: The spec sheet lists a 20-hour average battery life against a 40-hour figure in the product title, and the 3.5 mm cable does not carry mic audio.
• iClever BTH27 — biggest strength: A dual-mode 75/80 dBA volume limiter and 74 hours of claimed playtime, with a 10-minute Type-C charge said to give 8 hours.
• iClever BTH27 — biggest trade-off: It is built for small heads and young ears, so the shallow, child-sized cups will not suit most adults, and noise control is passive only.
• Who each is for: The G300 is for teens and adults who want one pair of headphones for studying, travel or gaming. The BTH27 is for parents buying for a 2+ year old or young child.
The G300 is a conventional adult over-ear headphone, and it reads like one on paper. You get Bluetooth 5.3 with a 10-metre range, a 32 ohm impedance, a 20 Hz–20 kHz dynamic driver, and physical push-button controls for media and calls. The frame is plastic with memory foam cushions, the headband extends, and it ships with a charging cable plus a 3.5 mm stereo cable. LexonElec also lists a 1-year warranty and a 210 g weight — light enough that a long study block will not feel like a chore.
The standout feature for studying is Active Noise Cancellation. If you work near traffic, a shared kitchen, a TV in the next room or a noisy café, ANC is the reason to pick this pair over a basic kids' headphone. The wired mode is a genuinely useful backup too: if the battery runs down mid-session, you plug in the 3.5 mm cable and keep going. Just note that the cable does not pass mic audio, so it is for listening, not calls.
Who should buy it: teens and adults who want one affordable-feeling, comfortable pair for study sessions, commutes, home office calls and casual gaming, and who like button controls instead of touch gestures. Who should skip it: anyone buying for a small child. There is no volume limiter here, no BPA-free or child-material claim, and no child-sized fit. Also skip it if you want RGB lighting — LexonElec confirms there is none. One honest caveat I would flag: the title claims 40 hours of playtime while the spec sheet lists 20 hours average life, so treat real-world runtime as somewhere in that range and plan on charging every couple of days.
The BTH27 is a purpose-built kids' headphone, and almost every spec points at that. The ear cups are child-sized, the headband is flexible, the cups rotate 110° for easy positioning, and the arms extend through 10 levels so the fit grows with your child. Oversized raised buttons make it operable by small hands, and the whole thing folds for storage. Materials are BPA-free, the leather ear cushions are described as easy to keep hygienic, and iClever says the build meets ASTM safety standards with a 12-month warranty.
The hearing-protection angle is the real selling point. A dual-mode limiter caps output at 75 dBA or 80 dBA — 75 dBA for younger, more delicate ears and 80 dBA for older kids — and iClever's Sound Refiner softens harsh 2–4 kHz frequencies so things still sound clear at a capped volume. For a parent, that is far more meaningful than any bass claim.
Battery is the other headline. iClever frames the 74 hours as roughly 15 days of use at 4–5 hours a day, and a 10-minute Type-C top-up is said to give 8 hours. If the battery does die, the 3.5 mm cable keeps audio going. Bluetooth 5.4 handles pairing with iPhones, iPads and tablets with a stable connection up to about 33 feet.
Who should buy it: parents of a 2+ year old or a young child who want safe volume, a proper small-head fit and a battery that survives a trip without a charger. Who should skip it: adults, teens with larger heads, and anyone who needs active noise cancelling. The BTH27 uses passive isolation only, and the child-sized cups will not seal properly on an adult ear.
Side-by-Side: Which Should You Choose?
• Best for safe listening with a child → iClever BTH27. The 75/80 dBA limiter and BPA-free build are the whole point of this model.
• Best for long battery life → iClever BTH27. 74 hours claimed, plus a 10-minute charge said to deliver 8 hours.
• Best for adult and teen fit → LexonElec ATTACK SHARK G300. Full-size over-ear cups with an extendable headband and memory foam cushions.
• Best for emergency wired listening → a tie. Both include a 3.5 mm cable; on the G300 that cable carries audio only, not mic.
• Best for calls → LexonElec ATTACK SHARK G300. It has a built-in mic and media/button call controls; the BTH27 is aimed at listening, not meetings.
• Best for travel with kids → iClever BTH27. Folding design, 110° rotating cups and 10-level arms.
• Best for a mixed household → buy both. They serve completely different ears, and neither one substitutes for the other.
For studying, I would buy the LexonElec ATTACK SHARK G300. Active Noise Cancellation, a full-size memory foam fit at 210 g, Bluetooth 5.3, a built-in mic and a wired fallback cover more of what an adult or teen actually needs across a study week. In my opinion, the iClever BTH27 is the better purchase only if the listener is a young child — its volume limiter and small-head design are excellent, but they are not features an adult studying for exams can use. If your household has both, they are complements, not rivals. Check the current price on Amazon for each before deciding, since value will shift with whatever deal is live.
Yes, in my opinion. It is the only one of the two with Active Noise Cancellation, which is what you want for blocking background chatter. Its over-ear memory foam cushions also suit longer sessions better than small child-sized cups.
Not active noise cancelling — it uses passive noise cancellation, meaning the ear cups physically block some sound. There is no ANC circuit and no transparency mode. For a quiet classroom or a car ride, passive isolation is usually enough.
The iClever BTH27, on paper. iClever claims 74 hours and says a 10-minute Type-C charge gives 8 hours of playback. The G300's title mentions 40 hours of playtime, but its spec sheet lists a 20-hour average battery life, so expect the BTH27 to last considerably longer between charges.
Yes, both include a 3.5 mm audio cable and support wired listening. On the G300, note that the supplied cable does not support the microphone, so calls need Bluetooth.
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