How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a rugged, sweat-proof pair of in-ear sports buds for hard training, choose Redzoo Headphones V5.0; if you need a volume-limited, over-ear kids' headphone for a child on a tablet or iPad, choose MIDOLA Kids. These two products share a Bluetooth badge and very little else. One is built around the gym; the other is built around small heads and safe listening. Here is how I'd sort them out.
• Redzoo Headphones V5.0 — biggest strength: IPX7 waterproofing plus an ear-hook, in-ear fit that is designed to stay put through sweat, rain and movement, with up to 16 hours of playback per charge.
• Redzoo Headphones V5.0 — biggest trade-off: It is an in-ear design for adults, so there is no volume limiter and nothing here is aimed at protecting a child's hearing.
• MIDOLA Kids — biggest strength: A safe volume limit of 85/94dB, over-ear comfort, and a wired 3.5mm option so it works even when a tablet has no Bluetooth.
• MIDOLA Kids — biggest trade-off: It is a plastic over-ear kids' headphone with sound isolation rather than active noise cancellation, and it is not built for sweat or heavy workouts.
• Who each pick is for: Redzoo for adult runners, gym-goers and commuters who want secure in-ear buds; MIDOLA for parents buying a first headphone for a toddler, kid or teen.
Redzoo's pitch here is durability and grip. The shell is IPX7-rated with an interior nano-coating, which in plain terms means sweat and heavy rain are not a threat to it. For anyone who has killed a pair of cheap earbuds with a summer of running, that is the headline feature. The ear-hook plus in-ear shape, with eartips in XS, S, M and L, is designed to lock into place rather than rely on a friction fit that loosens the moment you start moving.
The audio side is more thoughtful than the price bracket usually suggests. There are 11mm dynamic drivers, SBC and AAC codecs, and CVC6.0 microphones for calls. The frequency range runs the standard 20Hz–20,000Hz, and the bass-forward tuning makes sense for workout music. Bluetooth 5.0 with a 10-metre range is current enough, and the ability to stay connected to two devices at once is genuinely useful if you switch between a phone and a laptop. Redzoo also claims up to 16 hours of playback from a 2-hour charge, with remaining battery shown on your phone's screen.
Two things to know before buying. First, there is no active noise cancellation — the "noise cancelling" wording refers to the call microphone, not to blocking out a noisy gym. Second, this is an adult in-ear product with no volume limiting, so I would not hand it to a young child. In my opinion, this is the pick for the adult who trains hard and wants buds that survive it.
MIDOLA is solving a different problem: letting a child listen without you worrying about the volume. The 85/94dB safe volume limit is the core feature, and it is the reason a parent would choose this over any generic headphone. The 40mm dynamic drivers are large for this category, which usually translates to fuller, less tinny sound than tiny kid-oriented buds — useful for cartoons, audiobooks and tablet games.
The fit is built around children. It is an over-ear, foldable design with an adjustable headband and a lightweight plastic body, and it ships in purple with a kid-oriented colour box. It is listed for toddlers, kids, teens and adults, so it can grow with a child for a few years. Connectivity is flexible: Bluetooth 5.4 for wireless use, plus a 3.5mm aux cable in the box for wired listening, which matters on flights or with devices that have no Bluetooth. A USB-C charging cable and manual are included, and there is a 1-year manufacturer warranty.
What it is not: a sports headphone. The noise control is listed as sound isolation, which is passive blocking rather than active cancellation, and there is no waterproofing claim, so sweat-soaked gym sessions or rain are a bad idea. If your kid mostly watches and listens at home, in the car or on a plane, this is a well-judged design. If they need something for football practice, it is the wrong tool.
• Best for workouts and sweat → Redzoo Headphones V5.0 (IPX7 shell with interior nano-coating).
• Best for protecting a child's hearing → MIDOLA Kids (85/94dB safe volume limit).
• Best for running and gym stability → Redzoo Headphones V5.0 (ear-hook and in-ear fit with XS/S/M/L eartips).
• Best for all-day comfort over long sessions → MIDOLA Kids (over-ear, adjustable headband, foldable).
• Best for wired fallback → MIDOLA Kids (3.5mm aux cable included; Redzoo is wireless only, with no jack).
• Best for calls and voice clarity → Redzoo Headphones V5.0 (CVC6.0 noise-cancelling microphones).
• Best for multipoint device switching → Redzoo Headphones V5.0 (connects to two devices at once).
• Best for a first headphone for a toddler or young kid → MIDOLA Kids.
On battery, the two are closer than you might expect. Both list a 2-hour charge and a 16-hour average life, so neither has a meaningful runtime edge on paper. The real difference is the shape of the product: one is sealed against sweat, the other is sealed against loud volume.
In my opinion, these are not competitors so much as two answers to two different questions. If I were buying for myself for running or the gym, I would take the Redzoo Headphones V5.0 — the IPX7 rating, ear-hook fit and multipoint Bluetooth are exactly what that use case demands. If I were buying for a child, I would take the MIDOLA Kids without hesitating, because the volume limit and over-ear comfort are the features that actually matter there. Decide who the listener is first, and the choice makes itself.
how to headphones work
Bluetooth headphones like both of these contain a small amplifier and dynamic drivers that turn electrical signals into sound. Redzoo uses 11mm in-ear dynamic drivers, while MIDOLA Kids uses larger 40mm over-ear dynamic drivers; both cover a 20Hz–20,000Hz frequency range, and both pair wirelessly over Bluetooth at up to roughly 10 metres.
how to headphones on iphone
Both are standard Bluetooth headphones, so pairing works the same way on an iPhone: enable Bluetooth in settings, put the headphones into pairing mode, and select them from the device list. Redzoo is wireless-only, so an iPhone with no headphone jack is fine for it. MIDOLA Kids also includes a 3.5mm aux cable, which helps on older devices or in-flight entertainment systems.
how to headphone mode off
"Headphone mode" usually means a device is routing audio to a connected headphone instead of its speaker. To turn it off, disconnect the Bluetooth device in your phone's settings, or simply power the headphones down. On MIDOLA Kids, also unplug the 3.5mm aux cable if it is connected, since a wired connection will keep audio routed to the headset.
how to headphones
If you mean how to choose between these two, it comes down to the listener. Redzoo Headphones V5.0 is an adult sports in-ear model with IPX7 waterproofing and no volume cap. MIDOLA Kids is an over-ear kids' headphone with an 85/94dB safe volume limit, a foldable adjustable headband and a wired aux option. For current pricing on either, check the latest price on Amazon.
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