If you want swim-ready open-ear headphones with built-in MP3 storage for kids, choose MARLALL Soft Liquid Silicone; if you need Bluetooth listening for workouts and everyday outdoor use, choose sunvito Bone Conduction Headphones. The key difference is underwater use: MARLALL supports swimming in MP3 mode, while sunvito is described as sweatproof for exercise, not as a swimming headphone.
MARLALL Soft Liquid Silicone vs sunvito Bone Conduction Headphones at a Glance
• MARLALL’s biggest strength: IPX8 waterproofing and built-in 32 GB MP3 storage for listening while swimming; trade-off: Bluetooth is not supported underwater, and playback lasts up to 7 hours.
• sunvito’s biggest strength: Bluetooth 6.0, a built-in microphone, and up to 10 hours of playback; trade-off: its IPX6 sweatproof design is for sweat and light rain, not swimming.
• Comfort and awareness: Both use open-ear bone conduction designs, so neither relies on earbuds that seal the ear canal.
• For phone-free pool listening: MARLALL is the more relevant fit, with music stored on the headphones and MP3 mode required in the water.
• For connected workouts: sunvito suits listening and hands-free calls with a paired phone, tablet, or laptop.
• Who each pick is for: Choose MARLALL for swimming and onboard music storage; choose sunvito for Bluetooth workouts, calls, and longer stated playback.
MARLALL is the more specialized option. It combines an open-ear bone conduction design with an IPX8 waterproof rating and built-in 32 GB MP3 storage. That combination is useful for a swimmer who wants music without bringing a phone into the pool area or relying on a Bluetooth connection underwater. The crucial detail is that swimming requires MP3 mode: Bluetooth does not work underwater.
Its soft liquid-silicone overmold and ear-hook design are intended to make the headphones comfortable and secure during movement. The listed weight is 22.68 g, and the manufacturer describes the fit as lightweight, with pressure distributed around the ear. For a child who swims, a parent may value that the design leaves the ears open rather than using conventional in-ear buds. It is still an adult-described product, so the available information does not establish a child-specific fit or sizing.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Battery life is stated as up to 7 hours, with a 1.5-hour charge time. The magnetic charging cable also provides access to the internal storage from a computer for playlist management. One limitation matters for music-library planning: tracks from a phone app cannot be copied directly onto the headphones’ memory. The music needs to be managed through the supported computer connection.
Who should skip it: Skip MARLALL if Bluetooth streaming underwater is essential, or if your main need is longer stated playback for phone-connected calls and daily workouts.
sunvito Bone Conduction Headphones: Who It's For
sunvito is aimed at people who want open-ear listening while running, cycling, working out, or walking outdoors. Bluetooth 6.0 supports a wireless connection to a phone, tablet, or laptop, and the built-in microphone is intended for hands-free calls. That makes it more convenient than MARLALL when the listener wants to switch between music, podcasts, and calls from a paired device rather than manage files on headphone storage.
The listed battery life is up to 10 hours, with a 2-hour charging time and magnetic charging. At 29 g, it is lightweight, though a little heavier than MARLALL’s listed 22.68 g. The headphones use button controls, and their open-ear design leaves the ear canal unobstructed. That can be useful when a child needs to hear nearby activity during an outdoor walk or a supervised workout, although open-ear listening does not guarantee awareness in every situation.
Its IPX6 rating is described for sweat and light rain. That is a meaningful distinction from MARLALL’s swimming-focused waterproofing: sunvito is presented as a workout headphone, not one for immersion. The product information also lists a pair of earplugs in the box, but the headphones themselves are described as open-ear bone conduction.
Who should skip it: Skip sunvito if the headphones need to be used for swimming or if built-in MP3 storage is a must-have.
• Best for swimming → MARLALL Soft Liquid Silicone. Its IPX8 rating and MP3 mode are the relevant features for water use. Bluetooth is not supported underwater.
• Best for Bluetooth listening → sunvito Bone Conduction Headphones. Bluetooth 6.0 is specified for connecting to a phone, tablet, or laptop.
• Best for longer stated playback → sunvito. It lists up to 10 hours, compared with MARLALL’s up to 7 hours.
• Best for onboard music storage → MARLALL. It includes built-in 32 GB MP3 storage, with playlist management through a computer connection.
• Best for hands-free calls → sunvito. Its listed built-in microphone supports calls over Bluetooth.
• Best for poolside-to-swim use → MARLALL. The important switch is from Bluetooth listening on land to MP3 playback underwater.
• Best for sweat-heavy workouts and light rain → sunvito. Its IPX6 description covers sweat and light rain, but not swimming.
• Best open ear headphones for kids who need a swim option → MARLALL; for Bluetooth exercise use → sunvito. Both leave the ears open, but their water protection and connection options differ.
My Verdict
In my opinion, I would choose MARLALL for kids if swimming is the primary use, because its waterproof rating and built-in MP3 storage address that specific need. The required MP3 mode underwater is a real constraint, but it is clear and manageable if playlists are prepared in advance.
For everyday Bluetooth workouts, I would choose sunvito instead. Its longer stated playback and built-in microphone make it the more practical choice for phone-connected listening and calls. My recommendation for kids is MARLALL only when pool use is central; otherwise, sunvito’s Bluetooth design is the more flexible fit.
Think about where the headphones will be worn most. MARLALL is the swimming-oriented choice, while sunvito is designed around workouts and outdoor activity. Their water ratings are not interchangeable: IPX8 is specified for MARLALL, whereas sunvito’s IPX6 description covers sweat and light rain. Do not assume that sweatproof means suitable for submersion.
Decide how the music will reach the headphones. MARLALL stores music onboard, which allows listening in MP3 mode without a live Bluetooth connection. That means preparing and managing files through a computer connection. Phone-app music cannot be copied directly to its storage. sunvito takes the opposite approach: it connects to a phone, tablet, or laptop over Bluetooth 6.0, which is convenient for streaming and switching among audio sources, but depends on a paired device.
Consider whether calls matter. sunvito lists a built-in microphone and hands-free calling. MARLALL’s product information includes a microphone-related note: dry the microphone after swimming to help prevent call issues. That does not make the two models equivalent for calls; sunvito explicitly highlights its microphone for Bluetooth calling.
Check the stated listening and charging needs. MARLALL lists up to 7 hours of playback and a 1.5-hour charge time. sunvito lists up to 10 hours and a 2-hour charge time. These are manufacturer-stated figures, not a guarantee of identical runtime in every use. If a child’s activity lasts longer than either figure, plan around charging rather than assuming uninterrupted playback.
Keep fit expectations realistic. Both are open-ear bone conduction headphones, and both are described as lightweight and suitable for active use. The listed weights differ, but neither product sheet gives child-specific sizing. A parent choosing headphones for a child should consider whether the adult-described design is likely to fit comfortably and securely before relying on it for regular activity.
No. The product information says Bluetooth is not supported underwater. Swimming requires MP3 mode, using music stored on the headphones.
They are described as IPX6 sweatproof headphones for sweat and light rain. The product information does not describe them as suitable for swimming or immersion.
sunvito lists up to 10 hours of continuous playback, while MARLALL lists up to 7 hours. Their stated charging times are 2 hours and 1.5 hours, respectively.
No active noise cancelling is specified for either model. Both are open-ear bone conduction headphones, so they are not conventional noise-cancelling earbuds.
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