--- product_id: 525895406 title: "Wireless Earbuds Sport, Bluetooth 5.4 Headphones 3D Bass Hi-Fi Stereo Over Ear Buds, 60Hrs ENC Noise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running Gym for Android iOS" brand: "rulefiss" price: "¥12237" currency: JPY in_stock: true reviews_count: 13 category: "Rulefiss" url: https://www.desertcart.jp/products/525895406-wireless-earbuds-sport-bluetooth-5-4-headphones-3d-bass-hi store_origin: JP region: Japan --- # IP-X7 waterproof for sweat & rain resistance 14.2mm composite diaphragm for rich 3D Hi-Fi sound 60 hours total playtime with fast Type-C charging Wireless Earbuds Sport, Bluetooth 5.4 Headphones 3D Bass Hi-Fi Stereo Over Ear Buds, 60Hrs ENC Noise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running Gym for Android iOS **Brand:** rulefiss **Price:** ¥12237 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your workout soundtrack—never settle for less than pro-grade sound and endurance! ## Quick Answers - **What is this?** Wireless Earbuds Sport, Bluetooth 5.4 Headphones 3D Bass Hi-Fi Stereo Over Ear Buds, 60Hrs ENC Noise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running Gym for Android iOS by rulefiss - **How much does it cost?** ¥12237 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/525895406-wireless-earbuds-sport-bluetooth-5-4-headphones-3d-bass-hi) ## Best For - rulefiss enthusiasts ## Why This Product - Trusted rulefiss brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Next-Gen Bluetooth 5.4:** Ultra-stable dual-channel connection with 100% faster transmission and 41ms ultra-low latency—never miss a beat or a call. - • **Marathon 60H Battery Life:** Stay unplugged longer with up to 8 hours per charge and a compact 800mAh case delivering 60 hours total playtime. - • **Immersive 360° Hi-Fi Sound:** Experience crystal-clear calls and resonant bass with AAC/SBC decoding and 4 ENC mics for noise-free conversations. - • **Ergonomic Sport-Ready Design:** Lightweight 8g earbuds with flexible 45° earhooks and 3 silicone tip sizes ensure a secure, sweat-proof fit for any workout. - • **Smart Touch & Universal Compatibility:** Effortlessly control music, calls, and voice assistants with intuitive touch panels, compatible with iOS, Android, and more. ## Overview 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. ## Description Buy Wireless Earbuds Sport, Bluetooth 5.4 Headphones 3D Bass Hi-Fi Stereo Over Ear Buds, 60Hrs ENC Noise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running Gym for Android iOS: Over-Ear Headphones - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: 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!” Review: 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. ## Features - 【360 Surround Hi-Fi Stereo Sound, Crystal Clear Calls】The Rulefiss wireless headphones sport produce impressively beautiful sound, using an AAC/SBC audio decoder and a 14.2mm composite diaphragm to increase the audio frequency by 75% (18Hz-25kHz). Instrumental details are layered, vocals are clear, resonant bass and authentic highs ensure you feel pure music. At the same time, the Bluetooth headphones have built-in 4 clear microphones and ENC noise reduction technology, they can retain 80% of the sound, making the call clearer. - 【Upgraded Bluetooth 5.4】Rulefiss Q38 wireless earbuds sport uses Bluetooth 5.4 technology and dual-channel transmission. The Bluetooth earbuds offer enhanced anti-interference capabilities and optimized channel hopping mechanisms, effectively shielding against external interference. Compared with Bluetooth 5.3, the transmission speed is +100%, the stability is +70%, 41ms low latency. - 【60 Hrs Playtime, Dual Power Display】The Bluetooth headphones in ear charging case with LED power display shows remaining power in percentage. Charging case presents its battery from 1%-100% to let you know the current power status of your running headphones and charging case anytime anywhere. Up to 6-8 hours playtime of normal usage on a single charge and boost that to 60 hours playtime with the 800mah compact charging case. With type-C quick charge, it only takes 1.5 hrs to charge the case. - 【Comfortable Sports Earhooks, IP-X7 Waterproof】Unlike most sport headphones wireless, Q38 headphones are designed with a soft, ultra-light and flexible 45° earhook structure, which can fit your ears smoothly. And a single earbud is as light as 8g, equipped with 3 different sizes of high-quality silicone earplugs (S/M/L). Also with IP-X7 certified waterproof technology, you can protect the sport earbuds from sweat and rain during sports or daily use. Best choice for workout, running, gym. - 【Smart Touch Control, Refined Appearance】Multi-function touch panel on each sport ear bud helps to play, pause, adjust volume, answer, end calls, activate siri and google assistant more convenient. In addition, the appearance of the sport headset is made of 100% glossy coating, with smooth lines, comfortable touch and exquisite appearance. - 【Extensive Compatibility, Quick Connection】The wireless earphones for sports are compatible with almost all Bluetooth-enabled devices such as iOS, Android cellphones, TV, smart watches, PC, tablets, laptops, and more (Not compatible with gaming devices). After pairing the devices for the first time, the Bluetooth earphones will automaticall connect when you take them out of the charging case. ## Technical Specifications | Specification | Value | |---------------|-------| | 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 | ## Product Details - **Brand:** Rulefiss - **Color:** A-Bright Black - **Ear Placement:** Over Ear - **Form Factor:** In Ear - **Impedance:** 32 ohm ## Images ![Wireless Earbuds Sport, Bluetooth 5.4 Headphones 3D Bass Hi-Fi Stereo Over Ear Buds, 60Hrs ENC Noise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running Gym for Android iOS - Image 1](https://m.media-amazon.com/images/I/71TQdAQF9DL.jpg) ![Wireless Earbuds Sport, Bluetooth 5.4 Headphones 3D Bass Hi-Fi Stereo Over Ear Buds, 60Hrs ENC Noise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running Gym for Android iOS - Image 2](https://m.media-amazon.com/images/I/7172RwcR8oL.jpg) ![Wireless Earbuds Sport, Bluetooth 5.4 Headphones 3D Bass Hi-Fi Stereo Over Ear Buds, 60Hrs ENC Noise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running Gym for Android iOS - Image 3](https://m.media-amazon.com/images/I/81adnfSCYaL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Hello! Can the earhook of the Wireless Earbuds be adjusted?** A: Thanks for your question! The earhook of the Q38 Bluetooth earphones is made of TPU material, which is comfortable and stable, and can be adjusted flexibly. **Q: Can I use the headset to answer incoming calls?** A: 1. Answer/end call Click L/R once 2. Reject call Press L/R for 2s **Q: Hello! is the surface of the q38 bluetooth earbuds smooth? is there a video showing it?** A: By Maclun Seller on April 15, 2023 **Q: Does the led flash when the earbuds are being used? can the leds be turned off?** A: I had never noticed it before. So I just put them in. And I did not see any LEDs flashing while I had them on and listening to them. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Amazing Sound and Comfortable Fit *by G***R on June 24, 2026* “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!” ### ⭐⭐⭐⭐⭐ A Very Functional Wireless Sports Earbuds *by T***8 on August 8, 2024* 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. ### ⭐⭐⭐⭐ Glad I bought these *by A***A on August 10, 2023* 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. ## Frequently Bought Together - Wireless Earbuds Sport, 2025 Bluetooth 5.3 Headphones Bass Hi-Fi Stereo Over Ear Buds, 48Hrs Noise Cancelling Headset with Earhook, IP7 Waterproof Earphones Workout Running for Laptop Pad Android iOS - Wireless Bluetooth Headphones, Immersive HiFi Stereo Earbuds, 2023 New 48Hrs Ear Buds, ENC Mic, IP7 Waterproof Sport Earhooks --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/525895406-wireless-earbuds-sport-bluetooth-5-4-headphones-3d-bass-hi](https://www.desertcart.jp/products/525895406-wireless-earbuds-sport-bluetooth-5-4-headphones-3d-bass-hi) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-05*