{"indrexa_id":"8a03443a-b7e5-5c87-9f4d-bb6abb01b5a4","category_id":"wireless_earbuds","product_title":"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","brand":"Rulefiss","upc":null,"asin":"B0CMWFVV15","semantic_description":"The Rulefiss Q38 are budget-priced ($35.99) true wireless sport earbuds featuring Bluetooth 5.3, a 14.2mm driver, IPX7 waterproofing, and flexible earhooks designed for active use. They offer up to 6-8 hours of playback per charge with a total of 48 hours combined with the 800mAh USB-C charging case, and include dual microphones with CVC 8.0 noise reduction for calls. They do not feature true active noise cancellation or wireless case charging, and no independent review data is available to verify real-world performance claims.","best_for_summary":"Best for budget-conscious fitness enthusiasts who need secure-fit, IPX7-waterproof wireless earbuds with long total battery life for workouts and running under $40.","not_ideal_for":["audiophiles seeking true lossless or high-resolution audio","users who need active noise cancellation","those requiring multipoint dual-device connectivity"],"use_case_tags":["running","gym","workout","calls","budget-friendly"],"buyer_profile_tags":["fitness-focused","budget-conscious","casual-listener"],"manufacturer_description":"3D Hi-Fi Stereo Sound, Crystal Clear Calls: The newest Q38 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 65% (20Hz-20kHz). 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 2 clear microphones and CVC 8.0 noise reduction technology, they can retain 85% of the sound, making the call clearer.Bluetooth 5.3, Quick Connection: Rulefiss Q38 wireless earbuds sport uses Bluetooth 5.3 technology and dual-channel transmission, and supports protocols such as HSP, HFP, A2DP and AVRCP. Compared with Bluetooth 5.2, the transmission speed is +150%, the stability is +50%, 51ms low latency, and it is easily compatible with iOS/Android/Windows systems. After pairing the devices for the first time, the Bluetooth earbuds will automatically connect when you take them out of the charging case.10 Minute Quick Charge, 2 Hours of Playback: Our wireless earphones 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 48 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 7g, 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 Bluetooth earphone 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.","feature_bullets":["3D Hi-Fi Stereo Sound, Crystal Clear Calls: The newest Q38 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 65% (20Hz-20kHz). 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 2 clear microphones and CVC 8.0 noise reduction technology, they can retain 85% of the sound, making the call clearer.","Bluetooth 5.3, Quick Connection: Rulefiss Q38 wireless earbuds sport uses Bluetooth 5.3 technology and dual-channel transmission, and supports protocols such as HSP, HFP, A2DP and AVRCP. Compared with Bluetooth 5.2, the transmission speed is +150%, the stability is +50%, 51ms low latency, and it is easily compatible with iOS/Android/Windows systems. After pairing the devices for the first time, the Bluetooth earbuds will automatically connect when you take them out of the charging case.","10 Minute Quick Charge, 2 Hours of Playback: Our wireless earphones 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 48 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 7g, 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 Bluetooth earphone 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."],"spec_table":[{"field":"Brand","value":"Rulefiss"},{"field":"Color","value":"L-Blue"},{"field":"Ear Placement","value":"In Ear"},{"field":"Form Factor","value":"In Ear"},{"field":"Material","value":"Plastic"}],"bought_in_past_month":null,"variants":["B0CMWFVV15","B0FKGSLPCT","B0DPW3P9VY","B0CRNB4DS4","B0C57SK1WP","B0CHYD2X8X","B0DX7936H7"],"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":48,"has_ear_tips_multiple_sizes":true,"has_active_noise_cancellation":false},"review_intelligence":{"total_reviews":23315,"average_rating":4.3,"rating_distribution":{"1_star":"5%","2_star":"4%","3_star":"8%","4_star":"16%","5_star":"67%"},"top_positive_themes":["Sound quality (29)","Fit (26)","Battery life (19)","Quality (18)","Reliability (18)","Comfort (17)","Value for money (10)","Design (8)"],"top_negative_themes":[],"top_mixed_themes":[],"review_summary":"Customers find these wireless earbuds comfortable and well-fitting, staying securely in place over the ear. They appreciate the sound quality, battery life that lasts forever, and reliable performance. Customers like the design and consider them a great value for the price.","reliability_score":"high"},"best_offer":{"retailer":"amazon","retailer_id":"B0CMWFVV15","price_usd":35.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/rulefiss-wireless-earbuds-sport-2025-8a03443a/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":"B0CMWFVV15","price_usd":35.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/rulefiss-wireless-earbuds-sport-2025-8a03443a/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, 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","brand":{"@type":"Brand","name":"Rulefiss"},"description":"The Rulefiss Q38 are budget-priced ($35.99) true wireless sport earbuds featuring Bluetooth 5.3, a 14.2mm driver, IPX7 waterproofing, and flexible earhooks designed for active use. They offer up to 6-8 hours of playback per charge with a total of 48 hours combined with the 800mAh USB-C charging case, and include dual microphones with CVC 8.0 noise reduction for calls. They do not feature true active noise cancellation or wireless case charging, and no independent review data is available to verify real-world performance claims.","sku":"8a03443a-b7e5-5c87-9f4d-bb6abb01b5a4","identifier":[{"@type":"PropertyValue","name":"asin","value":"B0CMWFVV15"},{"@type":"PropertyValue","name":"indrexa_id","value":"8a03443a-b7e5-5c87-9f4d-bb6abb01b5a4"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/rulefiss-wireless-earbuds-sport-2025-8a03443a/amazon","priceCurrency":"USD","price":35.99,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.3,"reviewCount":23315}}}