{"indrexa_id":"479902f7-d4d7-5d8d-ad7f-7ef5ae69b3c0","category_id":"wireless_earbuds","product_title":"Wireless Earbuds Sport, Bluetooth 5.4 Headphones Bass Hi-Fi Stereo Over Ear Buds, 56Hrs CFZNoise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running for Laptop Pad Android iOS","brand":"Rulefiss","upc":null,"asin":"B0DPW3P9VY","semantic_description":"The Rulefiss Q38 are budget-priced ($39.99) true wireless sport earbuds featuring Bluetooth 5.4, a 14.2mm driver, IPX7 waterproofing, and earhooks designed for secure fit during workouts. They offer up to 7 hours of single-charge playback and 56 hours total with the 800mAh USB-C charging case, along with ENC noise reduction via 4 microphones and touch controls. They do not support active noise cancellation, wireless charging, or multipoint pairing, and are explicitly incompatible with gaming devices.","best_for_summary":"Best for fitness-focused, budget-conscious users who need secure-fit, waterproof wireless earbuds with long total battery life for running, gym sessions, and casual calls.","not_ideal_for":["Gamers needing low-latency gaming device compatibility","Users requiring active noise cancellation","Audiophiles seeking lossless or high-resolution audio"],"use_case_tags":["running","gym","workout","calls","budget-friendly"],"buyer_profile_tags":["fitness-focused","budget-conscious","casual-listener"],"manufacturer_description":"【360 Surround Hi-Fi Stereo Sound, Crystal Clear Calls】The 2025 model 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.【2025 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.【56 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 56 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.","feature_bullets":["【360 Surround Hi-Fi Stereo Sound, Crystal Clear Calls】The 2025 model 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.","【2025 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.","【56 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 56 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."],"spec_table":[{"field":"Brand","value":"Rulefiss"},{"field":"Color","value":"Deep Rose Gold"},{"field":"Ear Placement","value":"In Ear"},{"field":"Form Factor","value":"In Ear"},{"field":"Impedance","value":"32 Ohms"}],"bought_in_past_month":"50+","variants":["B0DPW3P9VY","B0FKGSLPCT","B0CHYD2X8X","B0CMWFVV15","B0DX7936H7","B0CRNB4DS4","B0C57SK1WP"],"shipping_amount":"FREE","manufacturer":"Rulefiss","climate_pledge_friendly":false,"category_specs":{"is_multipoint":false,"is_stem_design":false,"has_touch_controls":true,"has_transparency_mode":false,"has_wireless_charging":false,"case_battery_life_hours":56,"has_ear_tips_multiple_sizes":true,"has_active_noise_cancellation":false},"review_intelligence":{"total_reviews":23315,"average_rating":4.5,"rating_distribution":{"1_star":"4%","2_star":"1%","3_star":"5%","4_star":"15%","5_star":"75%"},"top_positive_themes":["Sound quality (29)","Battery life (13)","Comfort (12)","Fit (10)","Functionality (10)","Value for money (9)","Connectivity (5)","Ease of use (5)"],"top_negative_themes":[],"top_mixed_themes":[],"review_summary":"Customers find these wireless earbuds offer good sound quality, with one noting they're perfect for athletes. The earbuds provide a secure fit that stays in place while moving, and customers appreciate their easy setup and connectivity. Moreover, they receive positive feedback for their battery life, with one customer noting they don't need frequent charging, and customers find them comfortable and easy to use. Additionally, customers consider them a fantastic value for money.","reliability_score":"high"},"best_offer":{"retailer":"amazon","retailer_id":"B0DPW3P9VY","price_usd":39.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/rulefiss-wireless-earbuds-sport-bluetooth-479902f7/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-06-03T20:04:52.021051+00:00"},"all_offers":[{"retailer":"amazon","retailer_id":"B0DPW3P9VY","price_usd":39.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/rulefiss-wireless-earbuds-sport-bluetooth-479902f7/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-06-03T20:04:52.021051+00:00"}],"_llm_hints":{"best_offer_logic":"lowest price among in-stock offers","out_of_stock_offers_included":true,"use_affiliate_url":"always use affiliate_url field, never construct retailer URLs manually","shipping_note":"shipping costs are estimates only — final cost depends on user location and membership status","null_fields":"null spec or review fields mean data was unavailable from source — do not infer values","manufacturer_description":"brand's own product description — official copy from Amazon listing","feature_bullets":"array of manufacturer's bullet-point features from Amazon listing","spec_table":"raw structured spec table from Amazon — category-specific technical specs","bought_in_past_month":"Amazon demand signal — number of units sold in past 30 days","variants":"array of ASINs for color/size variants of this product","shipping_amount":"shipping cost signal — FREE indicates free shipping available","climate_pledge_friendly":"Amazon Climate Pledge Friendly badge — sustainability certification","data_freshness":"checked_at timestamp from most recent price record","best_offer_null_means":"all known offers are currently out of stock — check all_offers for availability"},"json_ld":{"@context":"https://schema.org","@type":"Product","name":"Wireless Earbuds Sport, Bluetooth 5.4 Headphones Bass Hi-Fi Stereo Over Ear Buds, 56Hrs CFZNoise Cancelling Headset with Earhook, IP-X7 Waterproof Earphones Workout Running for Laptop Pad Android iOS","brand":{"@type":"Brand","name":"Rulefiss"},"description":"The Rulefiss Q38 are budget-priced ($39.99) true wireless sport earbuds featuring Bluetooth 5.4, a 14.2mm driver, IPX7 waterproofing, and earhooks designed for secure fit during workouts. They offer up to 7 hours of single-charge playback and 56 hours total with the 800mAh USB-C charging case, along with ENC noise reduction via 4 microphones and touch controls. They do not support active noise cancellation, wireless charging, or multipoint pairing, and are explicitly incompatible with gaming devices.","sku":"479902f7-d4d7-5d8d-ad7f-7ef5ae69b3c0","identifier":[{"@type":"PropertyValue","name":"asin","value":"B0DPW3P9VY"},{"@type":"PropertyValue","name":"indrexa_id","value":"479902f7-d4d7-5d8d-ad7f-7ef5ae69b3c0"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/rulefiss-wireless-earbuds-sport-bluetooth-479902f7/amazon","priceCurrency":"USD","price":39.99,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.5,"reviewCount":23315}}}