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🎧 Elevate your workout soundtrack—never settle for less than pro-grade sound and endurance!
Rulefiss Q38 Wireless Earbuds combine cutting-edge Bluetooth 5.4 tech with a 14.2mm composite diaphragm to deliver immersive 3D Hi-Fi stereo sound. Designed for active professionals, these IP-X7 waterproof earbuds feature 60 hours of total playtime, advanced ENC noise cancellation with 4 mics, and ergonomic earhooks for a secure fit during intense workouts. Smart touch controls and broad device compatibility make them the ultimate companion for seamless audio on the go.











| ASIN | B0FKGSLPCT |
| Additional Features | Bluetooth 5.4, 14.2mm Composite Diaphragm, 3D Hi-Fi Professional Audio, One-Step Pairing, Lightweight, Comfortable, 56+ Hrs Playtime, 4 ENC Mics, Fast Charging, Single/Twin mode, LED Battery Display, Sensitive Touch, IP-X7 Waterproof, Universal Compatibility, Type-C Charging, Working & Business & Fitness |
| Age Range Description | Adult |
| Antenna Location | Business/Entertainment/Fitness/Gaming/School/Travel/Running/Exercising |
| Audio Driver Type | Dynamic Driver |
| Audio Latency | 31 milliseconds |
| Battery Average Life | 6 hours |
| Battery Charge Time | 1.5 hours |
| Best Sellers Rank | #6,156 in Electronics ( See Top 100 in Electronics ) #443 in Earbud & In-Ear Headphones |
| Bluetooth Range | 20 meters |
| Bluetooth Version | 5.4 |
| Brand | Rulefiss |
| Brand Name | Rulefiss |
| Built-In Media | BX27 Bluetooth 5.4 Earbuds * 2, USB-C cable * 1, User Manual (English, Spanish, French, etc) * 1, Charging box * 1, Soft silicone ear caps * 6 (L/M/S) |
| Color | A-Bright Black |
| Compatible Devices | Cellphones, Tablets, Laptops, Smart Watches, Televisions |
| Connectivity Technology | Wireless |
| Control Method | Touch |
| Control Type | Touch Control |
| Controller Type | Touch |
| Customer Reviews | 4.4 out of 5 stars 23,331 Reviews |
| Ear Placement | Over Ear |
| Earpiece Shape | In Ear |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) Plastic |
| Form Factor | In Ear |
| Frequency Range | 18Hz-20KHz |
| Frequency Response | 20 KHz |
| Headphone Folding Features | In Ear |
| Headphone Jack | USB-C (for charging, no audio) |
| Headphones Ear Placement | Over Ear |
| Impedance | 32 ohm |
| Manufacturer | Rulefiss |
| Model Name | Q38 |
| Model Number | Q38 |
| Noise Control | Environmental Noise Cancellation |
| Number of Items | 1 |
| Sensitivity | 108 db |
| Specific Uses For Product | Business/Entertainment/Fitness/Gaming/School/Travel/Running/Exercising |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |
| Wireless Technology | Bluetooth |
G**R
Amazing Sound and Comfortable Fit
“These earbuds exceeded my expectations. The sound quality is clear, the Bluetooth connection is fast and stable, and they are very comfortable to wear for long periods. The battery life is impressive, and the charging case is compact and convenient. Great value for the price!”
T**8
A Very Functional Wireless Sports Earbuds
I have been using the Ltinist BX27 Sports wireless earbuds for a little over a month. The earbuds are of high quality, waterproof and suited for almost any sports activities. I have showered with these earbuds on and experienced no issues. The flexible lime green ear wrap is sporty and comfortable to wear. The wrap around the ears design keeps the earbuds securely in place even during intense physical activities. The battery life is impressive. I have not been able to deplete the battery in one continuous session. So far, I have only charged the BX27 3 times, not because it ran out juice but just to top up the charge. The sound quality is excellent and the price is very affordable. I used it mainly for listening to the news and background music. Voice calls over the wireless earbuds are clear and I have never experienced any drop offs. For the price, I would certainly recommend these earbuds to anyone looking for a reliable and economical BT wireless sports earbuds.
A**A
Glad I bought these
THINGS I LIKE ABOUT THESE EARBUDS: The price is great. I I like the color of these earbuds. I like the over-the-ear piece, it is flexible and comfortable for hours of use, and I never have to worry about them falling out. Also, with the over-the-ear piece, I don't have to press the earbud itself into my ear very far, also increasing the comfort. I've worn these for 8 -10 hours at a time with only occasional, minimal discomfort that was eased by just shifting the position of the earbuds slightly. The battery life is phenomenal! I've often been amazed that when it announces it needs charging it's been playing for 8 hours. It also takes a long time before I need to recharge the case. I like that I can use just one earbud at a time. It also works fine with my Google Assistant. I can walk farther away from the audio source than I can with my Galaxy Buds Live. ONLY THING I DON'T LIKE AS MUCH: The sound on these is only acceptable -not great. The volume can go high, but I keep it at a moderate to low level because at anything more than that the sound seems tinny or brassy. At first the sound didn't seem very good to me even at moderate levels, but I've gotten used to it and now to me it sounds fine, especially for podcasts and audiobooks & phone calls. I mostly use them for voice audio, and they seem fine for that. I don't listen to music as often, but at medium to lower volume levels I now feel the music also sounds alright. It just doesn't have great sound like my Samsung Buds Live do. I can't imagine that any earbuds in this price range would have any better sound. CONCLUSION: Overall, I'm very glad I purchased these! I use them almost every day, and for my everyday use, I like them much better than my Samsung Buds Live which can fall out of my ears. These will never fall out of my ears, so they're great for when I'm moving around, doing my everyday tasks & great for exercising.
A**R
Holds a great charge . Solid 10 out of 10.
I’m very impressed with this one. I would recommend this to anyone. It does great noise cancellation a fantastic value for the money. The sound quality is great. The mic works very well. People talk on the phone and they say they can hear me with no problem and I can hear them very clear very comfortable to wear and what impressed me the most : it holds a charge so well , i’ve left them in my bag for two weeks at a time and they’re still charged, the attached photo shows they’re still at 100% and they were charged at least a month ago!! much better than even my Apple pods. I’ve purchased four of these now for myself and grandkids..
R**N
Love this
These wireless earbuds have become my go to. I love that I only need one at a time and can flip back in forth from one ear to the other extending the battery life. They are also super durable. This is my second set. I bought the first ones over a year ago and I am only replacing them becuase I misplaced the right side. I have never had a issue with sound quality. They fit perfectly in my ear and are easily adjustable. I have loved using these for yard work working out and several other activitys.
S**R
Liked them in spite of the issues but not exactly what I needed
I truly liked these earbuds in spite of some of the initial issues they had starting out. I liked that they came with an instruction booklet explaining how they worked and how work them. The sound when using them was clear and handled phone calls very well. The caller could hear me clearly and vice versa. Answering the call was a bit tricky. It also came in 4 different languages; English, German, French, and Italian. The box contained a card declaring a 5 year warranty but the card did not reveal many details on that warranty. I directs you to a website to learn more. I wanted to keep them initially in spite of the issues below until the low batter issue. Unfortunately, that was a deal breaker for me because my earbuds are my lifeline. They help me since I am neurodivergent and dealing with the noise of crowds, people, or places like the grocery store requiring the necessity of being able to block surrounding sounds while ignoring the other people allowing me to focus on the task I had to get done without feeling anxious at their proximity. I need them for prolonged periods of time and to hold a charge longer than 2 hours. The issues: Even when following the directions on how to work the separate functions of the earbuds with taps. The problem came in the lag time when tapping it as the instructions showed made it difficult to follow them. Another issue was the volume control. You had to wear both earbuds simultaneously to turn them up or down. You tapped the left earbud to turn the volume down. You tapped the right earbud to turn the volume up. If you only wore one earbud at a time and tapped it to answer the phone if it rang but due to the lag time it didn’t answer the phone with the appropriate tap you’d change the volume instead up or down depending on which earbud you were tapping. If you were only wearing one you’d have to adjust it directly on the phone or dig the other earbud out of your pocket to make the correction. The charge for them doesn’t last very long. Even when fully charged at 100% after less than 2 hours they start alerting you to low battery.
M**S
Love them!!
I have had a hard time finding a decent ear buds, that fit over my small ears and didn't interfere with glasses. These have been great! The charge holds amazingly! Sound quality is very satisfactory. Loved the color.
K**A
Amazing earbuds.
These are the only headphones that work for me. I have tiny ears so I got so lucky when I ordered this product. The charge last me about 4-5 days at a time using them almost non stop. They are very lightweight in the case and when I wear them it doesn’t even feel like I’m wearing anything. The volume is great. I don’t even have to have the volume up halfway because the volume is loud enough for me. The buttons are easy. And they are great quality. I’m very rough with my head phones and they are still going strong. Highly highly recommend this product.
V**N
good earbuds for sound and noise cancellation
Comfort is a priority, with an ergonomic design and customizable ear tips providing a secure fit. They stay in place during workouts, thanks to the included ear hooks. The Hi-Fi Stereo sound quality is exceptional, delivering a rich and balanced audio experience across genres. The built-in HD Mic with noise-canceling technology ensures crystal-clear calls, even in noisy environments.
C**A
Se adaptan estupendamente
Tienen una conexión más estable, menor latencia y menor consumo de energía. La calidad de sonido estéreo de alta fidelidad es buena, con reducción de ruido para llamadas más claras. La base de carga magnética y la pantalla de potencia precisa son características muy convenientes. Además, la duración de la batería es larga y la carga rápida por lo que los puedo usar sin preocupaciones. El emparejamiento automático es rápido y el control táctil hacen que su uso sea aún más sencillo. La pantalla digital que indica el nivel de carga de los auriculares es realmente útil y práctica. Me encanta la funda de carga cómo muestra con precisión la potencia restante de los auriculares. Así, siempre sabes cuánta energía tienes disponible y puedes cargarlos a tiempo sin preocupaciones. ¡Una característica realmente conveniente que hace que los auriculares sean aún más impresionantes! Sobre el precio: el precio asequible los convierte en una opción atractiva para cualquier persona que busque una experiencia auditiva excepcional sin romper el presupuesto. ¡Una excelente relación calidad-precio para unos auriculares inalámbricos con todas estas prestaciones! ¡Definitivamente, una excelente elección en auriculares inalámbricos!.
C**H
Love these new 1s
They have good sound and good range I could walk round the house listening to the music while my phone charged in other room without it cutting out...the tap to stop or play is excellent too. Cheap as chips too very happy with purchase so far
C**N
Son de très bonne qualité
Dans ce petit boîtier très design, ces écouteurs sont super, le son est parfait, la forme ergonomique est impeccable pour le sport , il faut juste s’habituer aux réglages expliqués ds la notice . Rapport qualité prix incroyable 👍
K**E
great,
I bought them with a discount and I still had a 10% discount, it turned out to be a very good price, I bought it because I was traveling by bus for 14 hours and I needed inexpensive but comfortable headphones, so it's a great purchase, design, color, comfortable, they fit well in the ears, the battery lasts very well. after the trip, I haven't charged yet, I still have 40% battery, and the round trip took about 30 hours, so they are fantastic, even my phone's battery doesn't last as long as these headphones, and the vapor is really good compared to the price, it's not the best sound, but it you neI bought them with a discount and I still had a 10% discount, it turned out to be a very good price, I bought it because I was traveling by bus for 14 hours and I needed inexpensive but comfortable headphones, so it's a great purchase, design, color, comfortable, they fit well in the ears, the battery lasts very well. after the trip, I haven't charged yet, I still have 40% battery, and the round trip took about 30 hours, so they are fantastic, even my phone's battery doesn't last as long as these headphones, and the vapor is really good compared to the price, it's not the best sound, but it you need it on a trip or in the gym, these are great headphones because they have good sound and you can't hear the environment, so you can really immerse yourself in your world ed it on a trip or in the gym, these are great headphones because they have good sound and you can't hear the environment, so you can really immerse yourself in your world
Trustpilot
1 month ago
3 weeks ago