By Ethan BrooksUpdated November 2026
This review looks at the jbl endurance race true wireless waterproof sport earbuds listing sold on Amazon as a renewed unit, covering the IP68 sealing, JBL Pure Bass tuning, the claimed 48-hour total playback and active noise cancelling. It suits runners, gym users and anyone who sweats heavily and wants a secure, sealed fit without paying for flagship features. It is a weaker choice for listeners who need best-in-class noise cancelling on flights, audiophiles chasing detailed soundstage, or buyers who want a brand-new sealed box with a full manufacturer warranty, since renewed units carry different coverage terms that should be checked before purchase.
Amazon Renewed Endurance Race 2 – Waterproof (IP68) Sports True Wireless Earbuds with 4 mics for Crisp, Clear Calls, JBL Pure Bass Sound, 48Hrs of Playback, & Active Noise Cancelling (Blue) (Renewed)
Product Overview
The listing is for the Endurance Race 2 line from JBL, a sport-focused true wireless design aimed at people who train outdoors or in the gym. JBL positions the earbuds as waterproof and dustproof to IP68, which means fully sealed against dust and able to tolerate submersion under conditions the manufacturer defines. The model is marketed with four microphones for calls, active noise cancelling, and a charging case that provides extended playback beyond what the earbuds alone deliver.
The product in this listing is sold as renewed, which typically means a unit that was returned, inspected and resold through a refurbishment channel. Renewed items can differ from new retail units in packaging, accessories and warranty length, so the seller’s condition notes and return policy matter as much as the spec sheet. The blue colorway is the one named in the listing title.
For context on how this model fits the broader category, see 7 Best True Wireless Earbuds Waterproofs for Workouts and Travel (2026), which compares several sealed sport designs side by side.
Key Features & Specifications
The table below lists only the points stated in the listing title or commonly published for this product family. Confirm the exact figures on the current product page, since renewed listings and firmware versions can vary.
| Feature | What the listing states | What it means in practice |
|---|---|---|
| Water and dust rating | IP68 | Fully dust-tight, with submersion resistance defined by the manufacturer. Sweat and rain are well covered; long swims are not a stated use. |
| Microphones | 4 mics | Beamforming mics aimed at clearer voice pickup during calls in windy or noisy outdoor settings. |
| Sound | JBL Pure Bass | A bass-forward tuning profile typical of JBL’s sport line, suited to beat-driven music. |
| Total playback | Up to 48 hours | Claimed combined time with the case. Real-world life depends on volume, ANC use and battery age. |
| Noise control | Active Noise Cancelling | Reduces steady low-frequency sounds such as traffic hum. Less effective on high-pitched or sudden noise. |
| Condition | Renewed | Refurbished unit; check the seller’s grade, included accessories and warranty terms. |
Ear tips, a charging cable and sizing options are usually included with the set, though renewed packages may differ. Check the included-items list before relying on a specific tip size.
Pros & Cons
Pros
- IP68 rating gives strong dust and sweat protection, which matters more than IPX-only ratings for training in humid or dusty conditions.
- Four-microphone array is designed to improve call clarity during outdoor use.
- Bass-oriented tuning suits workout playlists and everyday pop, hip-hop and electronic listening.
- The case-inclusive playback claim is generous for a sport earbud, reducing how often you need to charge between long weeks.
- Active noise cancelling helps with steady background noise during commutes and gym floors with machinery.
Cons
- Renewed units may carry shorter or different warranty coverage than new retail sets.
- Bass emphasis can mask vocals and detail, which some listeners find fatiguing on podcasts or acoustic music.
- Noise cancelling is generally less effective than dedicated travel-focused models, especially against airplane cabin noise.
- Fit is subjective; owners often report needing to try multiple ear tip sizes to get a secure seal during running.
- IP68 does not mean suitable for prolonged swimming or diving, and manufacturer conditions should be read closely.
Performance Analysis
Performance here is best judged by three things: how the sealing and fit hold up under sweat and movement, how the sound profile suits typical use, and how the battery and ANC behave day to day. Because this is a research-based review, the observations below draw on the published specifications and on common patterns that appear in owner discussions rather than on any personal testing.
Sealing and fit
An IP68 rating addresses ingress of dust and water, but it does not guarantee that the earbud will stay in the ear during a hard run. Owners of sport earbuds in general tend to report that the fit depends more on the wing or fin design and the tip size than on the water rating. Trying each provided tip, then running a short test with a few jumps and head turns, is the usual way to confirm a stable seat. Ear shape varies widely, and a tip that seals well can still feel tight after an hour.
Sound quality
Pure Bass tuning emphasizes the lower frequencies, so kick drums and synth bass come through with noticeable weight. That suits workouts and genres built around low end. Listeners who prioritize vocal clarity or a flat, neutral response may find the mids slightly recessed. Equalizer adjustments in the companion app, if available for your model, can soften the bass without changing the fit.
Battery and noise control
The 48-hour figure combines earbud and case charges under moderate volume with ANC off. Sustained use with active noise cancelling enabled and higher volume will shorten the runtime, as with nearly all true wireless designs. Active noise cancelling is most useful against steady sounds such as HVAC, bus engines and treadmill motors. It does little against sudden voices or sharp impacts, so it should be treated as a comfort feature rather than an isolation tool.
If you want a broader comparison of how sealed sport earbuds handle the same tradeoffs, Are Wireless and Waterproof Earbuds Worth It? IP Ratings Explained explains what the ratings actually cover.
Who Should Buy This Product?
This model fits runners, gym users, cyclists and outdoor walkers who want a sealed earbud that shrugs off sweat and rain, a bass-forward sound for training, and a battery that lasts several days between charges. It also suits people who take many calls outdoors, given the four-microphone array. Buyers who are comfortable with renewed hardware and who check the seller’s condition grade will usually find the value proposition straightforward.
Skip this model if you want the strongest available noise cancelling for travel, if you listen mainly to acoustic or classical music, or if you need a new-in-box unit with the longest manufacturer warranty. Anyone planning regular open-water swimming should look at designs specifically rated and marketed for immersion, such as those covered in 6 Best Waterproof Earbuds for Swimmers (2026): Picks Compared.
Buying Guide
Before buying any sport earbud, including this one, work through a short checklist. Start with the IP rating: IP68 covers dust fully and submersion to conditions the maker defines, while IPX4 or IPX5 handles sweat and light rain. Next, confirm the fit by reading reviews that mention your activity, since running fit complaints differ from office-use complaints. Then check battery claims, separating earbud-only time from total time with the case, and look at whether the warranty applies to renewed units.
Renewed listings deserve particular attention. Read the condition grade, confirm what accessories are included, and check the return window before ordering. If a unit arrives with a cosmetic blemish or missing tips, a short return period gives you room to exchange it.
Alternatives in the same family are worth comparing. The first is the JBL Endurance Race 2 in blue, a brand-new-listing option in the same model line:
JBLWaterproof and dustproof, Ergonomic wing enhancer with Twistlock technology, Enhance your work-out with Sports Mode Endurance Race 2 – True Wireless Earbuds – Blue
The second is the purple colorway of the Endurance Race 2 line, which keeps the same sport positioning and waterproof claims while offering a different look and possibly different sales terms:
JBL Endurance Race 2 – Waterproof (IP68) sports true wireless earbuds with 4 mics for crisp, clear calls, JBL Pure Bass sound, 48Hrs of Playback, plus speed charging & Active Noise Cancelling (Purple)
A third route for buyers who want a different brand’s sealed sport design is to browse the lineup in 7 Best Waterproof Bluetooth Earbuds for Swimming in 2026 and compare rating, fit style and noise handling against your own training habits. For a wider look at workout-focused waterproof sets, 5 Best Waterproof Earbuds for Running (2026): Picks Compared is a useful reference.
FAQ
Are jbl endurance race true wireless waterproof sport earbuds rated for swimming?
IP68 indicates strong resistance to dust and submersion under conditions defined by the manufacturer. That is not the same as a swimming or diving rating. Light pool use may be possible, but check the official guidance and rinse the earbuds in fresh water after exposure to chlorine or salt.
How long do the earbuds last on a single charge?
The earbuds themselves typically deliver a shorter run than the total figure. The 48-hour claim combines the earbuds with the case. Expect less with ANC on and at high volume, and expect battery capacity to drop as the unit ages.
Do the earbuds stay in place during running?
Fit is individual. Owners often report that the right tip size and wing position matter more than the earbud model itself. Test with a few jumps and head movements before committing to a long run.
Is the active noise cancelling good enough for flights?
It helps reduce steady low-frequency sound, but it is generally less effective than dedicated travel-focused noise cancelling designs. Treat it as a comfort aid rather than a full cabin-noise solution.
What does renewed mean for this listing?
Renewed generally means a previously sold unit that was inspected and resold. Check the seller’s condition notes, included accessories, return policy and whether a manufacturer or seller warranty applies.
Does the bass tuning suit podcasts and calls?
Bass-forward tuning suits music with strong low end. For podcasts, voice clarity may be less neutral than in a flatter-tuned earbud. The microphones are intended to help call clarity, but results depend on wind and background noise.
Can I use one earbud at a time?
Most true wireless designs in this class support single-earbud use, which lets you keep one ear open for traffic or conversation. Confirm the exact behavior in the product manual, since controls and pairing modes can differ.
Final Verdict
The jbl endurance race true wireless waterproof sport earbuds listing offers a sealed, bass-forward sport design with a generous claimed battery figure and active noise cancelling suited to gyms and outdoor routes. Its main tradeoffs are the renewed condition, a sound profile that favors bass over detail, and noise cancelling that is solid for everyday use but not class-leading for travel. For runners and gym users who accept those limits, it is a practical choice. Buyers who need a new-in-box unit, the strongest travel ANC or neutral vocal tuning should look at the alternatives above before committing.
About Ethan Brooks
Ethan Brooks is part of our editorial team and reviews and edits our headphone tech & types guides, checking product details against manufacturer specifications and owner feedback.
