We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 6 min read · Independent comparison
If you want a sweat-proof, ultra-light sport earbud that stays locked to your ears through runs and gym sessions, choose Rulefiss Earbuds; if you need a true over-ear headphone with long playtime, FM radio and memory-card playback for travel and desk work, choose PODERIX PDBEAM.
• Rulefiss Earbuds — biggest strength: A 7 g-per-bud earhook design with IP7 waterproofing, so sweat, rain and movement are the whole point of the build.
• Rulefiss Earbuds — biggest trade-off: It is an earbud with an earhook, not a real over-ear headphone, so it will not give you the cushion-and-band feel of a full-size set.
• PODERIX PDBEAM — biggest strength: A genuine over-ear headphone with 25 hours of playtime, FM radio and mini SD card playback in one foldable package.
• PODERIX PDBEAM — biggest trade-off: Passive noise isolation only, and it relies on a rechargeable battery with no charging case to top it up on the move.
• Pick Rulefiss Earbuds if you want a lightweight, waterproof sport companion for running, workouts and calls.
• Pick PODERIX PDBEAM if you want a soft, all-day over-ear headphone for travel, office hours and screen-free listening.
The Rulefiss Q38 is built around a very specific idea: keep the bud on your ear no matter what your head is doing. The 45° flexible earhook structure, a single earbud weighing just 7 g, and three sizes of silicone earplugs (S/M/L) all point the same direction. This is gear for movement, not for lounging. The 3D bionic ergonomic shape is meant to sit in the ear canal and stay there.
On the audio side, Rulefiss uses a 13 mm graphene moving coil driver with AAC/SBC decoding, a 20 Hz–20 kHz frequency range and 24 ohm impedance. There are two microphones with CVC 8.0 noise handling, and the brand claims roughly 85% of the voice is retained on calls. Bluetooth 5.3 keeps the connection stable up to 15 meters, with latency listed at 30 milliseconds — low enough that lip-sync feels acceptable on casual video.
Battery life is where the Rulefiss story gets practical. You get a claimed 6–8 hours per charge, stretched to 48 hours total with the 800 mAh charging case, and the case itself refills in about 1.5 hours over USB-C. The dual LED display shows remaining power as a percentage, which is genuinely useful when you are heading out the door. IP7 waterproofing covers sweat and rain.
Who should skip it: if you want the enveloping feel of a full over-ear headphone, or you dislike things sitting inside your ear canal, this is the wrong shape. It also connects to one device at a time.
PODERIX PDBEAM: Who It's For
The PODERIX PDBEAM goes the opposite way. This is a proper over-ear headphone: an adjustable headband, soft memory protein ear cushions, and a lightweight build intended for all-day wear. The apricot finish and fabric carry case give it a softer, more lifestyle-oriented look than typical black-and-chrome travel cans.
Its headline feature set is about options. Bluetooth 5.4 handles wireless listening at up to 10 meters. Beyond that, there is a built-in FM radio mode and mini SD card playback, so you can listen without pairing a phone at all — useful when you want music without tying up your device. Sound is tuned for deep bass and rich stereo via a dynamic driver with a 20 Hz–20 kHz range.
Battery life is stated at up to 25 hours of playtime and 120 hours of standby on a single charge. Noise handling is passive isolation only — the ear cushions block some airplane and office noise, but there is no active cancellation circuitry here. Controls are push-button and voice-based rather than touch.
Who should buy it: travelers, remote workers, students and anyone who wants an over-ear headphone for long stretches without a charging case to manage. The FM and SD card modes are a real plus if you like listening without your phone.
Who should skip it: if you need active noise cancellation, or you want a compact earbud that disappears into a pocket, the PDBEAM is the wrong tool. It is also the larger, heavier object of the two.
Side-by-Side: Which Should You Choose?
• Best for long listening sessions at a desk or on a plane → PODERIX PDBEAM. Real over-ear cushions and an adjustable headband are built for hours of wear.
• Best for total battery endurance → Rulefiss Earbuds. 48 hours combined with the case beats the PDBEAM's 25 hours, though the PDBEAM does it without a case.
• Best for device-free listening → PODERIX PDBEAM. FM radio and mini SD card playback have no equivalent on the Rulefiss.
• Best for calls on the move → Rulefiss Earbuds. Two microphones with CVC 8.0 and voice-assistant support are aimed squarely at this.
• Best for wireless range → Rulefiss Earbuds. Bluetooth 5.3 at 15 meters versus Bluetooth 5.4 at 10 meters.
• Best for a lighter, more pocketable setup → Rulefiss Earbuds. The charging case is compact and the buds weigh almost nothing.
• Best for a softer, lifestyle look → PODERIX PDBEAM. The apricot finish and fabric case are a deliberate style choice.
In my opinion, most people shopping this comparison should decide by shape first, not features. If your priority is training, sweat and staying put, I would buy the Rulefiss Earbuds — the earhook design, IP7 rating and 48-hour case are exactly what that job needs. If your priority is a comfortable over-ear headphone for travel, work and long home listening, I would buy the PODERIX PDBEAM — the cushions, 25-hour battery and FM/SD card modes make it the more versatile sit-down companion. Neither is a compromise on the other's turf; they are simply built for different bodies and different days. Check the current price on Amazon before you commit, since that is the one variable that can tip a close call.
FAQ
how long to charge bose over ear headphones
how long to charge sony over ear headphones
Again, there is no charge-time figure for Sony in these data sheets. The relevant number here is the Rulefiss case at roughly 1.5 hours; the PDBEAM lists only its 25-hour playtime and 120-hour standby.
how long to charge jbl over ear headphones
No JBL data is available in this comparison. What I can tell you is that the Rulefiss case charges in about 1.5 hours, and the PODERIX PDBEAM does not publish a charging time in its specifications.
how long should over ear headphones last
That depends on the battery and how well you treat them. The PODERIX PDBEAM is rated for 25 hours of playtime per charge and 120 hours of standby, while the Rulefiss offers 6–8 hours per bud and 48 hours total with its case. Battery capacity fades with charge cycles over time, so how long either lasts in years comes down to usage and care.
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See also: PODERIX PDBEAM vs AIAUXAI Open Ear USB: Large Over Ear, OLLSPAKER Sport Earbuds vs Rulbovs NE35: Over Ear Hook, Koss 154336 vs AOC Headphones: Large Over Ear Headphones