{"indrexa_id":"d4110945-e57a-5ea6-ad57-13a3ccf819d0","category_id":"wireless_earbuds","product_title":"Back Bay Audio Duet 50 Pro – Sweatproof Wireless Bluetooth Earbuds, 130 Hour Long Battery Life for iPhone, Android, Mini Charging Case, TWS Headphones with Microphone, Gift for Runners","brand":"Back Bay Audio","upc":null,"asin":"B085VL4FLB","semantic_description":"The Back Bay Audio Duet 50 Pro are budget-tier true wireless earbuds priced at $49.99, offering an exceptional 130-hour total battery life (8 hours per earbud, 122 from the USB-C charging case) and IPX5 sweat resistance, making them well-suited for running and workouts. They feature dual microphones for phone calls, an impedance of 16 ohms, and a tuned sound signature emphasizing bass and clear highs, though they lack ANC, wireless charging, and multipoint connectivity. Connectivity reliability has received mixed reviews, with some users reporting inconsistent pairing or units stopping working entirely.","best_for_summary":"Best for budget-conscious runners and gym-goers who prioritize exceptionally long battery life and sweat resistance over premium features like ANC or wireless charging.","not_ideal_for":["Swimmers or those needing full waterproofing beyond IPX5","Users who need ANC or transparency mode for commuting or travel","Those requiring rock-solid, consistent Bluetooth connectivity"],"use_case_tags":["running","gym","calls","budget-friendly","gift"],"buyer_profile_tags":["fitness-focused","budget-conscious","gift-buyer"],"manufacturer_description":"[130 Hours of Battery Life] Enough battery for any adventure! These long lasting bluetooth headphones can play music for 8 hours straight, and the charging case holds 122 more hours of playtime. A single charge of the case with a USB-C cable can power 130 total hours[Dual Microphones – Clear Phone Calls] Take wireless phone calls and control your music on your iPhone or Android. These are the best Bluetooth earbuds with mic, wireless mic for cordless phone calls. The bluetooth earbuds battery life is also stellar[Back Bay Signature Sound] These long battery life earbuds are tuned in our Boston HQ to produce the rich tone of the classic American hi-fi stereos - strong bass, natural midrange, and crisp highs. The Duet 50 Pro’s have a full, vibrant sound[Sweatproof] Not only are the Duet 50 Pro’s long lasting headphones, they are fully sweatproof and can handle long runs in the rain and snow. The bluetooth wireless earbuds nano-coating creates IPX-5 rated sweat-proofing [NOTE: Not for Swimming][Charges Your Cell Phone] Just plug in the included charging converter cable to the case, and you can charge any kind of iPhone or Android. The small earbuds (audifonos bluetooth inalambricos pequeños) can be an extra power source for your cell phone","feature_bullets":["[130 Hours of Battery Life] Enough battery for any adventure! These long lasting bluetooth headphones can play music for 8 hours straight, and the charging case holds 122 more hours of playtime. A single charge of the case with a USB-C cable can power 130 total hours","[Dual Microphones – Clear Phone Calls] Take wireless phone calls and control your music on your iPhone or Android. These are the best Bluetooth earbuds with mic, wireless mic for cordless phone calls. The bluetooth earbuds battery life is also stellar","[Back Bay Signature Sound] These long battery life earbuds are tuned in our Boston HQ to produce the rich tone of the classic American hi-fi stereos - strong bass, natural midrange, and crisp highs. The Duet 50 Pro’s have a full, vibrant sound","[Sweatproof] Not only are the Duet 50 Pro’s long lasting headphones, they are fully sweatproof and can handle long runs in the rain and snow. The bluetooth wireless earbuds nano-coating creates IPX-5 rated sweat-proofing [NOTE: Not for Swimming]","[Charges Your Cell Phone] Just plug in the included charging converter cable to the case, and you can charge any kind of iPhone or Android. The small earbuds (audifonos bluetooth inalambricos pequeños) can be an extra power source for your cell phone"],"spec_table":[{"field":"Brand","value":"Back Bay Audio"},{"field":"Color","value":"Black"},{"field":"Ear Placement","value":"In Ear"},{"field":"Form Factor","value":"In Ear"},{"field":"Impedance","value":"16 Ohms"}],"bought_in_past_month":"100+","variants":null,"shipping_amount":"FREE","manufacturer":"Back Bay Audio","climate_pledge_friendly":true,"category_specs":{"is_multipoint":false,"is_stem_design":false,"has_touch_controls":false,"has_transparency_mode":false,"has_wireless_charging":false,"case_battery_life_hours":130,"has_ear_tips_multiple_sizes":false,"has_active_noise_cancellation":false},"review_intelligence":{"total_reviews":2848,"average_rating":4.3,"rating_distribution":{"1_star":"7%","2_star":"4%","3_star":"7%","4_star":"14%","5_star":"68%"},"top_positive_themes":["Sound quality (484)","Battery life (346)","Quality (290)","Value for money (245)","Fit (224)","Comfort (139)"],"top_negative_themes":[],"top_mixed_themes":["Reliability (138)","Connectivity (134)"],"review_summary":"Customers find these earbuds impressive, with great sound quality, outstanding battery life, and secure fit that stays in place during workouts. They are comfortable, allowing wear for hours without discomfort, and customers consider them good value for money. The reliability and connectivity receive mixed feedback - while some say they function well and pair instantly with phones, others report that they stop working entirely and don't connect consistently.","reliability_score":"mixed"},"best_offer":{"retailer":"amazon","retailer_id":"B085VL4FLB","price_usd":49.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/back-bay-audio-duet-50-pro-sweatproof-d4110945/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":"B085VL4FLB","price_usd":49.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/back-bay-audio-duet-50-pro-sweatproof-d4110945/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":"Back Bay Audio Duet 50 Pro – Sweatproof Wireless Bluetooth Earbuds, 130 Hour Long Battery Life for iPhone, Android, Mini Charging Case, TWS Headphones with Microphone, Gift for Runners","brand":{"@type":"Brand","name":"Back Bay Audio"},"description":"The Back Bay Audio Duet 50 Pro are budget-tier true wireless earbuds priced at $49.99, offering an exceptional 130-hour total battery life (8 hours per earbud, 122 from the USB-C charging case) and IPX5 sweat resistance, making them well-suited for running and workouts. They feature dual microphones for phone calls, an impedance of 16 ohms, and a tuned sound signature emphasizing bass and clear highs, though they lack ANC, wireless charging, and multipoint connectivity. Connectivity reliability has received mixed reviews, with some users reporting inconsistent pairing or units stopping working entirely.","sku":"d4110945-e57a-5ea6-ad57-13a3ccf819d0","identifier":[{"@type":"PropertyValue","name":"asin","value":"B085VL4FLB"},{"@type":"PropertyValue","name":"indrexa_id","value":"d4110945-e57a-5ea6-ad57-13a3ccf819d0"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/back-bay-audio-duet-50-pro-sweatproof-d4110945/amazon","priceCurrency":"USD","price":49.99,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.3,"reviewCount":2848}}}