How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a kid-safe, parent-managed headphone that pairs to two devices at once, choose Giznity Kids; if you need a sweat-ready open-ear set built for your own workouts and laptop-to-phone multitasking, choose TRANSFORMERS Open Ear Headphones.
Both are open-ear Bluetooth 5.4 headphones with multipoint pairing — that's the shared ground. From there, they split hard. One is a child's device with a volume ceiling and an app that lets a parent set the rules. The other is an adult sports headphone with water resistance and a bigger driver. If you're torn, the multipoint feature is probably what brought you here, so let's look at how each one actually uses it.
• Giznity Kids — biggest strength: A hard 85 dB volume cap plus in-app parental controls (usage stats, time limits, quiet hours, temporary Travel Mode up to 94 dB, Push-to-Talk family messages) make it the only one of the two designed around a child's safety.
• Giznity Kids — biggest trade-off: It's built for kids, so adults who want a discreet all-day headphone may find the hook-style fit and sticker-kit styling aimed at someone younger.
• TRANSFORMERS Open Ear Headphones — biggest strength: IPX5 nano-coating, soft silicone ear hooks and a 14.2mm dynamic driver make it the more convincing choice for running, training and sweaty outdoor sessions.
• TRANSFORMERS Open Ear Headphones — biggest trade-off: There's no volume limit and no app, and the age range is listed as adult — so it's a personal audio device, not a child-safety product.
• Who each is for: Giznity Kids for parents buying for a kid (or teen) who needs school, travel and study audio with guardrails; TRANSFORMERS for an adult who wants open-ear sound for workouts and quick device switching.
The Giznity Kids set (model Talkiepods K1) is an air-conduction open-ear headphone. Nothing goes inside the ear canal. Instead, a hook-shaped earpiece rests outside it, driven by a 16.2mm dynamic driver with a 20 Hz–20,000 Hz range and 32-ohm impedance. That open design is the whole point: a kid can still hear traffic, a teacher or a parent while audio plays. For a child walking to school or riding in the back seat, that awareness matters more than isolation.
The headline feature is the 85 dB cap. Volume is limited by design, and the companion app adds parental controls: you can see usage stats, set time limits and quiet hours, and switch on a temporary Travel Mode that raises the ceiling to 94 dB for noisy places before it automatically returns to 85 dB. There's also Push-to-Talk Talkie messaging — short family voice messages, screen-free, tap-to-reply. If you've ever wanted a way to reach a kid without handing them a phone, that's the idea.
Who should buy it: parents who want safe volume, durability and a bit of oversight. Who should skip it: adults who want a sport headphone with real sweat protection and no app overhead — the IP54 rating and kid-focused controls aren't aimed at you.
TRANSFORMERS Open Ear Headphones: Who It's For
The TRANSFORMERS set (model TF-T55) is also open-ear, but it's clearly pitched at adults who move. The ear placement is open, the earpiece shape is the same open_ear category, and the enclosure is silicone — including the flexible ear hooks that hold each bud in place during high-impact movement. If you've had earbuds work loose mid-run, that hook geometry plus a soft silicone build is the fix.
The audio side uses a 14.2mm dynamic driver across a 20 Hz–20,000 Hz range. That's a larger driver than the Giznity's 16.2mm figure suggests at first glance — different designs, but the point stands that this one is tuned to push clear vocals and satisfying bass out into open air rather than into your ear canal. It's an open-ear sound, not a sealed one, so expect to hear your surroundings and for your surroundings to hear a little of you.
Durability is the other half of the pitch. An IPX5 rating with a nano-coating means it shrugs off sweat, rain and moisture — the kind of conditions a training session or an outdoor run throws at it. Bluetooth 5.4 with multipoint lets you pair two devices at once, so you can bounce between a phone and a Windows laptop or iPhone without re-pairing. Charging is Type-C and takes about 1.5 hours. The kit includes the charging compartment, the earphones, a lanyard and a cable, and the rounded case is small enough for a pocket or bag — the included silicone lanyard clips the case to a belt loop or bag so it doesn't go missing.
Who should buy it: runners, gym-goers and commuters who want open-ear awareness with sweat resistance and fast device switching. Who should skip it: anyone buying for a young child — there's no volume cap, no parental app, and the listed age range is adult.
• Best for child safety → Giznity Kids. The 85 dB cap and app-based parental controls are the deciding factor if a kid is the wearer.
• Best for workouts and sweat → TRANSFORMERS Open Ear Headphones. IPX5 nano-coating and silicone ear hooks are built for training and rain.
• Best for multipoint pairing with a phone + tablet → Giznity Kids. Bluetooth 5.4 multipoint switches between two paired devices seamlessly — ideal for homework plus calls.
• Best for multipoint pairing with a phone + laptop → TRANSFORMERS Open Ear Headphones. Same two-device multipoint, framed around iPhone, Android and Windows laptop switching.
• Best for battery life → Giznity Kids. Up to 20 hours of playtime versus the TRANSFORMERS set, whose battery life isn't specified beyond a 1.5-hour charge time.
• Best for fast charging → TRANSFORMERS Open Ear Headphones. About 1.5 hours to charge versus roughly 2 hours for the Giznity.
• Best for durability against drops and play → Giznity Kids. IP54 plus a bendable memory-titanium band and rugged build.
• Best for a pocketable travel kit → TRANSFORMERS Open Ear Headphones. A compact rounded case with a lanyard for clipping to a bag.
• Best for family messaging and screen-free contact → Giznity Kids. Push-to-Talk Talkie messages with tap-to-reply.
If a child is going to wear these, I'd buy the Giznity Kids. In my opinion the 85 dB cap, the parental app and the rugged, bendable build are exactly the things that matter when the user is a kid — and the Bluetooth 5.4 multipoint covers the everyday phone-plus-tablet switching you actually need. If you're an adult buying for yourself and your priority is running, sweat and rain, I'd take the TRANSFORMERS Open Ear Headphones instead: IPX5 and the silicone ear hooks are the more honest fit for training. Match the headphone to the wearer and the multipoint pairing on either one will serve you well.
how to pair multiple headphones
With Bluetooth multipoint, each of these pairs to two devices at once. Pair the headphone to your first device, then put it in pairing mode again and connect the second; after that it remembers both and switches between them without re-pairing. Both the Giznity Kids and the TRANSFORMERS set support Bluetooth 5.4 multipoint for exactly this.
how to pair multiple headphones iphone
On an iPhone, open Settings, go to Bluetooth, and connect the headphone once. Then trigger pairing mode on the headphone again and select it for your second device. The multipoint connection then lets you move between the iPhone and the other device automatically. Note that this pairs one headphone to two devices — it isn't the same as sharing one audio stream to two separate headsets.
how to pair multiple headphones on ipad
The process on an iPad is the same as on an iPhone: Settings, then Bluetooth, then connect. Because these headphones use Bluetooth 5.4 multipoint, you can keep the iPad and a phone connected at the same time and switch between them. That's useful for a kid doing homework on a tablet while a parent calls on a phone.
how to pair multiple bluetooth headphones
If you mean pairing one headphone to several devices, multipoint on these Bluetooth 5.4 models handles two at a time. If you mean playing the same audio through two different headphones simultaneously, that depends on your phone or tablet's own audio-sharing feature, not on the headphones — neither product duplicates a single stream to a second headset.
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.
See also: Orzly Essential Accessories Bundle vs 4Gamers Hard Shell Travel, Yamaha HPHMT5W vs KRK KNS, Betron BS10 vs gorsun Kids Headphones: Wired Headphones, UPERGO Headphone vs Vakedy PS5: Headphones for PS5