If you want the lightest, most skin-friendly bone conduction option for a child or sensitive swimmer who needs all-day comfort, choose MARLALL Soft Liquid Silicone; if you need the most versatile dual-mode device with modern Bluetooth 6.0 connectivity for both land and water training, choose HIFI WALKER Swimming Headphones. This isn't a close call where it depends on your mood; these two devices serve fundamentally different priorities in how they handle the transition between pool time and gym time. One is engineered specifically to disappear on the face, while the other is built to be a robust companion for every aspect of your aquatic and athletic life.
• MARLALL Soft Liquid Silicone: Its biggest strength is the ultra-soft liquid silicone construction that feels gentle against the skin, making it ideal for long wear without irritation. Its trade-off is the lack of advanced wireless features like the latest Bluetooth standards, as it focuses purely on MP3 playback underwater. This pick is for the user who prioritizes material safety and comfort above all else.
• HIFI WALKER Swimming Headphones: Its biggest strength is the seamless switch between waterproof MP3 mode for swimming and Bluetooth 6.0 connectivity for land workouts, offering true versatility. Its trade-off is a slightly heavier build and a more rigid titanium frame compared to the soft silicone alternative. This pick is for the serious athlete who wants one device to handle laps and running sessions.
The MARLALL Soft Liquid Silicone model stands out immediately because of its material composition. In an industry where many headphones rely on hard plastics or standard rubberized coatings, this unit utilizes skin-friendly silicone overmolding. The product information specifies an item weight of just 22.68 grams, which is significantly lighter than many competitors in the same category. This low mass means that even during extended swimming sessions, the pressure on the head is minimal. For parents looking for the best kids headset for kids, this weight reduction is critical; a heavy device can cause neck strain or discomfort after just a few minutes of activity, but the MARLALL design distributes that pressure evenly across the ear hooks.
The ergonomics are designed around security and safety. The open-ear design ensures that while the device sits firmly on the cheekbone, it does not block the ear canal. This allows swimmers to remain aware of their surroundings, such as hearing lane lines or a coach shouting instructions, while still enjoying their music. The IPX8 rating confirms that the unit can withstand full submersion, allowing users to tackle activities like snorkeling or surfing without fear of water damage. However, there is a specific operational constraint to understand: the device operates in MP3 mode only when underwater. Bluetooth signals do not transmit through water, so users must load playlists directly onto the internal 32GB storage via a magnetic charging cable connected to a computer.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-27 · 7 min read · Independent comparison
This product is best suited for individuals who prioritize tactile comfort and have children who might be sensitive to the feel of hard materials. The "Soft Liquid" aspect suggests a texture that mimics the feel of skin, reducing the likelihood of chafing or sore spots behind the ears. It is also an excellent choice for those who simply want a dedicated swimming tool without the complexity of managing multiple connection modes. If your primary goal is to get into the pool and listen to music without worrying about the device digging into your temples, this is the solution. It is less about having the newest tech specs and more about ensuring the physical experience of wearing the headphone is as unobtrusive as possible.
The HIFI WALKER T10 Air II takes a different approach by focusing on technological integration and structural durability. With a stated item weight of 32 grams, it is slightly heavier than the MARLALL, but it compensates with a memory titanium enclosure. Titanium is known for its flexibility and resistance to corrosion, which makes this unit exceptionally durable for rigorous lap swimming and high-intensity training. The design rests outside the ear canal, maintaining the open-ear philosophy that prevents the blocked feeling common with traditional earbuds, yet it offers a more substantial build quality that some users prefer for stability during vigorous movement.
What truly sets this device apart is its dual-mode capability powered by Bluetooth 6.0 technology. While the MARLALL is strictly an MP3 player for underwater use, the HIFI WALKER allows you to connect wirelessly to your phone for land-based activities like running, cycling, or gym workouts. You can double-press the multifunction button to instantly switch between the Bluetooth mode for outdoor use and the MP3 mode for swimming. This eliminates the need to carry separate headphones for different parts of your routine. The inclusion of Bluetooth 6.0 implies a stable connection range of up to 10 meters, ensuring your audio doesn't drop out during a run on the track or a walk to the pool deck.
The control scheme is straightforward, utilizing physical push buttons for media control, volume adjustment, and track selection. Users can choose from sequential, shuffle, or folder play modes to organize their 32GB library. This level of customization suggests it is tailored for athletes who follow structured training plans and need specific playlists for warm-ups, intervals, and cool-downs. The battery life supports an average of 8 hours of continuous playback, which covers most daily workout schedules. This product is for the user who views their audio gear as a central hub for their entire fitness regimen, rather than just a poolside accessory. It is the choice for someone who demands high performance on land and water without compromising on connectivity standards.
• Best for lightweight comfort → MARLALL Soft Liquid Silicone: At 22.68 grams with soft liquid silicone, it is the clear winner for minimizing pressure on the head and ears.
• Best for battery longevity → HIFI WALKER Swimming Headphones: With an 8-hour average life compared to the MARLALL's 7 hours, it lasts longer on a single charge.
• Best for land-and-water versatility → HIFI WALKER Swimming Headphones: Only the HIFI WALKER supports Bluetooth 6.0 for use outside the water, bridging the gap between pool and gym.
• Best for sensitive skin → MARLALL Soft Liquid Silicone: The specific mention of skin-friendly silicone overmolding makes it superior for users prone to irritation from hard materials.
• Best for modern connectivity → HIFI WALKER Swimming Headphones: The Bluetooth 6.0 version offers a more advanced wireless standard for pairing with modern smartphones.
• Best for simple operation → MARLALL Soft Liquid Silicone: With fewer modes to toggle, it is easier to set up and use for pure swimming focus.
• Best for durability under stress → HIFI WALKER Swimming Headphones: The memory titanium enclosure provides a flexible yet robust structure for intense training.
• Best value for active lifestyles → HIFI WALKER Swimming Headphones: The ability to replace two pairs of headphones (one for land, one for water) with one unit offers significant utility.
In my opinion, I would buy the HIFI WALKER Swimming Headphones for my own use. While the MARLALL is undeniably softer and lighter, the functional advantage of having Bluetooth 6.0 for land workouts cannot be overstated. Having to swap devices or rely solely on pre-loaded MP3 files limits the freedom of a dynamic lifestyle. The HIFI WALKER solves the problem of carrying two separate pieces of audio equipment. That said, if I were buying for a young child or someone with very sensitive skin, I would pivot back to the MARLALL for its featherweight design and gentle touch. For the general buyer seeking the best low latency headphone for kids and adults alike who wants a single device to rule their workouts, the HIFI WALKER is the more complete package.
Both models are designed for adult age ranges according to their specifications, but their lightweight designs make them suitable for older children. Parents should supervise usage to ensure the fit remains secure and the volume is kept at safe levels to protect developing hearing.
No. Neither the MARLALL nor the HIFI WALKER supports Bluetooth transmission underwater because water blocks the signal. Both require you to store music directly on the 32GB internal memory and use MP3 mode while submerged.
You must transfer music files from a computer to the headphones using the included USB or magnetic charging cables. You cannot copy music directly from a phone app to the internal memory card on either device; the files must be manually dragged and dropped onto the device's storage.
Yes, the HIFI WALKER is better for gym workouts because it supports Bluetooth 6.0 connectivity. This allows you to stream music wirelessly from your phone while lifting weights or running, whereas the MARLALL is restricted to its internal storage for all audio playback.
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