Rulefiss wireless sport earbuds with 75H battery, HiFi sound & IPX8 waterproofing
75 hours of power and crystal-clear sound, built for every run.
The sound is quite acceptable. The ear hooks are comfortable and stable, which securely hold the earbuds during sports sessions (e-bike riding in the countryside for my part). RECOMMENDED
PlumePlume
Fast order, very nice red earbuds, very easy to pair, the sound is good, still need to test the battery life, but very happy with my purchase
Baluteau
Right out of the box I found serious earbuds for the price: the charge indicators present when opening the charging case are a real asset. I'll add on this subject that you also get the indication (in percentage) that appears when connecting/pairing with the phone. Recognition with my phone (a Xiaomi running Android) was almost instantaneous (model Q38). For the rest, the arches are both flexible (without being fragile) and easy to fit around the ear. There are replacement tips to adapt to other ear shapes. Finally, the sound is clean, without distortion. If I add some basic documentation, I consider the whole thing intelligently designed. It's ideal for sports, especially since the blue color may not appeal to everyone (personally it doesn't bother me).
Babsy
I just received them. The case is a bit larger than the AirPods one but that's okay! Connects easily. I got them to go running because my AirPods are dying! The fit on the ears is great! A bit surprised because I'm not used to hooks but it's great! The quality is more than sufficient for podcasts and music. Haven't tested calls yet
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One pair of earbuds that handles sport, calls, and music perfectly.
75H total runtime
The earbuds and case together deliver up to 75 hours of playback on a single charge cycle.
4-mic ENC clarity
Four microphones with environmental noise cancellation ensure your voice comes through clean on every call.
USB-C fast charging
A quick top-up via USB-C gets you back listening without long waits.
Personalised EQ app
Tune bass, mids, and highs directly from your phone to match your exact sound preferences.
Why these earbuds stand out
Most budget earbuds sacrifice battery life, call quality, or durability — you rarely get all three together. Rulefiss combines Bluetooth 5.4, genuine IPX8 waterproofing, and a four-mic ENC system at a fraction of the price of premium brands. The LED battery display and app-based EQ customisation are features usually reserved for much more expensive options.
Buy it nowSound that fits your lifestyle
With a 14.2 mm HiFi driver and four ENC microphones, these earbuds deliver rich, detailed audio whether you're mid-run or on a work call. The dedicated app lets you personalise the EQ so every listen sounds exactly the way you want. No compromises — just your music, your way.
Built to keep up with you
The anti-fall sport design locks the earbuds securely in place even during intense training sessions. IPX8 certification means heavy rain, sweat, and splashes are no concern at all. When battery does run low, USB-C fast charging gets you back to full in no time.
5 real benefits of the Rulefiss sport earbuds
From your morning run to your evening commute, these earbuds are built to perform all day.
All-day battery
With up to 75 hours of total playtime, you can go days between charges without worrying about running out mid-session.
Anti-fall sport fit
The ergonomic anti-fall design keeps earbuds firmly in place during running, jumping, and training — no readjusting needed.
IPX8 waterproofing
Certified IPX8 waterproof, these earbuds can handle heavy rain, sweat, and accidental splashes without skipping a beat.
HiFi audio quality
The 14.2 mm driver produces clear highs, detailed mids, and solid bass that makes both music and podcasts genuinely enjoyable.
Stable Bluetooth 5.4
Bluetooth 5.4 provides a faster, more stable connection so your audio stays smooth even when your phone is in your bag.
What buyers are saying
Customers who use these earbuds regularly share how they've changed their listening experience.
Percentage circleSaid the battery life exceeded their expectations for daily sport use.
Reported noticeably clearer calls compared to their previous earbuds.
Found the fit and stability reliable throughout runs and workouts.
*Based on self-reported results from verified buyers over a 3-month period.
Get yours nowWhat our customers say
The sound is quite acceptable. The ear hooks are comfortable and stable, which securely hold the earbuds during sports sessions (e-bike riding in the countryside for my part). RECOMMENDED
Fast order, very nice red earbuds, very easy to pair, the sound is good, still need to test the battery life, but very happy with my purchase
Right out of the box I found serious earbuds for the price: the charge indicators present when opening the charging case are a real asset. I'll add on this subject that you also get the indication (in percentage) that appears when connecting/pairing with the phone. Recognition with my phone (a Xiaomi running Android) was almost instantaneous (model Q38). For the rest, the arches are both flexible (without being fragile) and easy to fit around the ear. There are replacement tips to adapt to other ear shapes. Finally, the sound is clean, without distortion. If I add some basic documentation, I consider the whole thing intelligently designed. It's ideal for sports, especially since the blue color may not appeal to everyone (personally it doesn't bother me).
I just received them. The case is a bit larger than the AirPods one but that's okay! Connects easily. I got them to go running because my AirPods are dying! The fit on the ears is great! A bit surprised because I'm not used to hooks but it's great! The quality is more than sufficient for podcasts and music. Haven't tested calls yet
Get 75 hours of sport-ready sound for just $30.99 today.
A limited-time price drop on an earbuds set packed with premium features.
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Frequently asked
How long does one full charge of the earbuds case take?
Thanks to USB-C fast charging, the case tops up quickly compared to older micro-USB designs. Exact charge times depend on the power source used, but the fast-charge feature significantly reduces waiting time. The LED display lets you monitor the case battery level in real time.
Can I use these earbuds for swimming?
The IPX8 waterproof rating means these earbuds can withstand submersion in water, making them suitable for sweat-heavy workouts and rain. However, we recommend checking specific depth and duration limits in the product documentation before using them in a pool. For running and gym use they are fully covered.
Do both earbuds work independently, or only as a pair?
Both earbuds can be used together for stereo sound or individually for mono listening — useful when you need one ear free during a call or run. The seamless Bluetooth 5.4 connection handles switching between modes smoothly. Simply replace one earbud in the case to switch to single-ear mode.
Is the companion app available for both iOS and Android?
Yes, the Rulefiss companion app is compatible with both iOS and Android devices. It allows you to adjust the EQ, personalise sound profiles, and manage earbuds settings directly from your phone. Download it from your device's app store after pairing the earbuds.
What is included in the box?
The package includes the two earbuds, the charging case with LED battery display, a USB-C charging cable, and a set of ear tip sizes to ensure a comfortable, secure fit. Everything you need to get started is included right out of the box.
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We stand behind every order with a 30-day satisfaction guarantee — if something is not right, our support team is here to help with a hassle-free resolution. Shop securely knowing that your payment and personal information are protected at every step of checkout.