If you want immersive audio with smart noise cancellation and a unique anime-inspired identity for your daily commute or gym sessions, choose AVIOT Masked Rider Faiz; if you need rugged, fully submersible over-ear gear specifically engineered for underwater metal detecting, choose Killer B Headphones Thresher Waterproof Headphones. These two products sit in completely different worlds of utility, and while both carry the weight of their respective niches, picking the right one requires understanding exactly what environment you plan to use them in. I am not here to confuse you with technical jargon that doesn't apply to your life; I am here to tell you that comparing these two is like comparing a high-performance sports car to a specialized submarine vehicle. They are built for different terrains, different users, and fundamentally different goals.
• AVIOT Masked Rider Faiz: Offers 18 hours of battery life, hybrid active noise cancellation, and Bluetooth 5.3 connectivity with a distinct "Special Voice" feature for fans, but lacks true waterproofing beyond sweat resistance.
• Killer B Headphones Thresher: Built as fully submersible units capable of operating at depths over 100 feet with oversized speakers for deep tones, but designed strictly for wired connection to specific metal detectors and not for general wireless listening.
• Who it's for: The AVIOT pick is ideal for enthusiasts who want premium sound quality, active noise isolation, and a thematic design for workouts or travel, whereas the Killer B unit is exclusively for serious hobbyists needing durable, waterproof audio for underwater metal detecting.
The AVIOT Masked Rider Faiz is clearly an exercise in blending high-fidelity audio with pop culture passion. This isn't just another pair of earbuds; it is a piece of functional merchandise that respects the source material while delivering genuine performance. If you are a fan of the Masked Rider series, the "Special Voice" function alone might be the hook. By long-pressing the right button, you can activate voice guidance that uses sounds from the Faiz Gear and Kaixa Gear, bringing vivid memories of battles to life during every power on, off, or notification. It is a clever integration that turns a mundane tech interaction into a moment of nostalgia.
Beyond the novelty, the actual engineering supports a serious user base. The device features a hybrid noise-cancelling system with four microphones designed to reduce ambient noise effectively. This makes it a strong contender for those looking for sweat resistant bluetooth headphones for workout scenarios where they need to focus on their routine without being distracted by background chatter. The inclusion of Adaptive Noise Cancellation suggests a level of sophistication that goes beyond simple passive isolation. You get a Dynamic Driver that covers a frequency range from 20 Hz to 20,000 Hz, ensuring that the bass is deep and the highs are crisp.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-24 · 7 min read · Independent comparison
Battery life is another area where this product shines for the average commuter or athlete. With up to 18 hours of playback on a single charge and an extendable total of 60 hours when using the charging case, you are unlikely to run out of power during a standard week. The Bluetooth 5.3 connectivity ensures a stable wireless link, which is critical when you are moving around. The design itself merges a futuristic feel with the heaviness of a combat tool, utilizing the SMART BRAIN logo to capture the essence of the series. However, you must accept its limitations: it has an IPX4 rating. This means it handles sweat and light splashes well, making it suitable for intense training, but it is not built to survive being submerged in water. If your primary activity involves swimming or deep-water exploration, this is not the tool for you.
In stark contrast to the wireless, consumer-electronics-focused AVIOT earbuds, the Killer B Headphones Thresher is a purpose-built instrument for a very specific, demanding environment. This is not a product designed for your morning jog or your evening commute on the subway. It is engineered for the underwater world of metal detecting. If you have ever tried to listen to audio instructions while standing waist-deep in a river or ocean, you know how quickly standard electronics fail. The Thresher was created to solve exactly that problem. Its defining characteristic is that it is fully submersible, boasting a depth rating of over 100 feet. This level of waterproofing is not an afterthought; it is the core of the product's existence.
The build quality reflects its industrial application. Constructed from metal, plastic, and silicone, these over-ear headphones are described as some of the best-built underwater headphones on the market. They feature oversized speaker elements designed to produce deep, rich tones, which are essential for hearing subtle signals through water. Unlike the AVIOT model, these do not rely on Bluetooth or complex digital processing. Instead, they utilize a 3.5 mm jack and push-button controls, connecting directly to Minelab metal detectors like the Equinox, Manticore, X-Terra Pro, WM08, and WM09 modules. This wired approach eliminates the latency and potential interference issues that can occur with wireless signals in wet environments.
For the metal detectorist, the reliability of these headphones is paramount. They come with Minelab-approved connectors from Holin Manufacturing, ensuring a secure and consistent signal path. The fact that they are proudly assembled in the USA adds a layer of confidence regarding their construction standards. The color shift to black provides a sleek, modern look compared to previous yellow iterations, but the form factor remains robust. It is worth noting that because these are over-ear headphones designed for immersion, they are bulky and heavy compared to earbuds. They are not comfortable in ear earbuds for workout in the traditional sense; they are substantial pieces of equipment meant to stay securely on your head while you wade through rough terrain. If you are looking for a bluetooth headset for workout, this will not fit the bill, as it lacks wireless capability entirely. However, if your goal is to detect targets underwater without worrying about water damage, this is arguably the only choice that matters.
• Best for active wireless use → AVIOT Masked Rider Faiz: The Bluetooth 5.3 connection and lightweight in-ear design make it perfect for movement-based activities like running or lifting weights.
• Best for underwater durability → Killer B Headphones Thresher: With a 100+ foot depth rating and sealed construction, it is the only option that survives full submersion.
• Best for noise isolation in cities → AVIOT Masked Rider Faiz: The hybrid active noise cancellation actively reduces ambient noise, creating a quiet bubble for commuters.
• Best for clear signal detection in water → Killer B Headphones Thresher: Oversized drivers and direct wired connections ensure deep, rich tones necessary for distinguishing faint metal signals underwater.
• Best for long battery life → AVIOT Masked Rider Faiz: You get 18 hours of continuous playback plus a case that extends this to 60 hours, eliminating charging anxiety.
• Best for brand-specific compatibility → Killer B Headphones Thresher: Specifically tuned and connected for Minelab metal detectors, ensuring seamless integration with your existing gear.
• Best for unique audio customization → AVIOT Masked Rider Faiz: The ability to switch between special voice modes and custom sound tuning offers a personalized experience rare in standard audio gear.
• Best for rugged, impact-resistant build → Killer B Headphones Thresher: The use of metal and heavy-duty materials prioritizes survival in harsh conditions over portability.
After analyzing the specifications and intended use cases, my recommendation is straightforward. If you are looking for a versatile pair of sweat resistant bluetooth headphones for workout or daily listening, the AVIOT Masked Rider Faiz is the superior choice. Its combination of active noise cancellation, impressive battery life, and high-quality wireless performance makes it a practical investment for a modern lifestyle. The thematic elements are a bonus, but the functionality stands on its own. Conversely, the Killer B Headphones Thresher is an incredible piece of engineering, but it is too specialized to be a general-purpose recommendation. Unless you are actively engaging in underwater metal detecting with a Minelab detector, the lack of wireless capability and the bulky over-ear design limit its appeal significantly. In my opinion, for anyone seeking a reliable companion for physical activity or travel, the AVIOT model delivers the value and versatility that the Killer B unit simply cannot provide outside of its narrow niche.
No, they have an IPX4 rating which protects against sweat and light splashes, but they are not designed for submersion or swimming.
These headphones are designed specifically for Minelab models (Equinox, Manticore, etc.) and use a 3.5mm wired connection rather than Bluetooth.
The AVIOT earbuds offer 18 hours of playback on a single charge, whereas the Killer B headphones are wired and do not require an internal battery for operation.
The AVIOT Masked Rider Faiz features adaptive hybrid noise cancellation, while the Killer B Headphones Thresher do not include any noise control features.
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