If you want open-ear headphones with onboard music for sports running, choose Opinta Swimming Headphones; if you need in-ear noise cancellation, a charging case, and a touch-screen control setup, choose Thunelec Earbuds. The deciding difference is how you listen: Opinta is built around open-ear wear and MP3 playback for water use, while Thunelec focuses on noise control, calls, and everyday Bluetooth listening.
Opinta Swimming Headphones vs Thunelec Earbuds at a Glance
• Thunelec’s biggest strength: In-ear listening with ANC, ENC, transparency mode, and touch-screen controls on the charging case. Trade-off: It has no onboard music storage, and its IPX7 rating is not the same as Opinta’s stated IP68 rating.
• Battery distinction: Opinta lists up to 8 hours of continuous playback; Thunelec lists 6–8 hours per charge and up to 48 hours total with its case.
• Fit distinction: Opinta leaves the ear canal open; Thunelec uses silicone ear tips in three sizes.
• Choose Opinta if swimming, open-ear awareness, or stored music away from a phone matters most.
• Choose Thunelec if you want adjustable sound modes, noise control, and a case that adds listening time.
Opinta is the more purpose-built choice for someone who wants headphones for swimming and other water activities. Its open-ear bone-conduction design does not sit inside the ear canal, and the product is rated IP68 waterproof. There is an important operating detail: Bluetooth connectivity is not supported underwater. For swimming, switch to MP3 mode and use the built-in 32GB storage rather than relying on a phone connection.
That onboard storage can hold a stated 5,000–7,000 songs, and the headphones also support Bluetooth 5.4 above water. A 2.5-hour charge is listed to provide up to 8 hours of continuous playback. For sports running, the open-ear layout may appeal if you prefer not to seal your ear canals; the integrated red safety lights are also intended to improve visibility during nighttime runs. They can be switched on or off with a press-and-hold control.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-18 · 7 min read · Independent comparison
I’d consider Opinta if I wanted one headset for swimming and open-ear workouts, or if I wanted to listen without carrying a phone into the water. I’d skip it if I specifically wanted active noise cancellation, in-ear isolation, or Bluetooth streaming while submerged. Those are not the strengths of this design.
Thunelec is aimed at people who want conventional in-ear earbuds for commutes, calls, work, and general listening. Its noise-control options include ANC, ENC, and transparency mode. ANC is designed to reduce surrounding sound for the listener, while ENC is intended to improve call voice clarity. Transparency mode offers a way to hear more of the surroundings without removing the earbuds.
The earbuds use Bluetooth 5.4 and come with a charging case that has a full-color touch screen. The screen provides controls for playback, track changes, calls, and noise cancellation, along with features such as a timer and a headphone-search function. One practical limitation is that the earbuds do not support direct volume control; volume needs to be adjusted using the case screen or the connected device. Five EQ presets provide options including standard, classic, jazz, rock, and pop.
For battery life, Thunelec lists 6–8 hours of continuous use on a charge and up to 48 hours total with the charging case. Its IPX7 rating is intended to handle sweat, rain, and splashes. Three sizes of silicone ear tips are included. I’d shortlist it for someone who prioritizes noise control, calls, and case-based features. I would not choose it for swimming: its stated water protection is IPX7, and the product information does not describe underwater playback or built-in music storage.
• Best fit for swimming with stored music → Opinta Swimming Headphones. It has an IP68 rating and 32GB of onboard MP3 storage. Remember that Bluetooth is not supported underwater.
• Best for noise control on a commute → Thunelec Earbuds. ANC, ENC, and transparency mode give it more ways to manage listening and calls in busy settings.
• Best for sports running with open ears → Opinta Swimming Headphones. Its bone-conduction design does not cover the ear canal, and the built-in red lights are intended for nighttime visibility.
• Best for a touch-screen control setup → Thunelec Earbuds. The charging case screen handles several playback and feature controls, though volume must be changed on the case or connected device.
• Best for longer total playback between case charges → Thunelec Earbuds. Its stated total reaches up to 48 hours with the charging case, compared with Opinta’s up-to-8-hour continuous playback figure.
• Best if you want to leave your phone out of the water → Opinta Swimming Headphones. The built-in MP3 storage supports listening underwater in MP3 mode.
• Best for choosing a sound preset → Thunelec Earbuds. Five EQ modes let you select among standard, classic, jazz, rock, and pop.
• Best if you dislike putting earbuds in your ear canals → Opinta Swimming Headphones. Its open-ear design is the clearer match; Thunelec relies on in-ear silicone tips.
These products solve different problems, so a few tempting comparisons need context. Opinta’s up-to-8-hour figure is continuous playback from the headphones. Thunelec’s up-to-48-hour figure includes the charging case, while its stated single-charge use is 6–8 hours. If you usually listen in short stretches and recharge through the case, Thunelec’s total may matter more. If you want one uninterrupted session without depending on a phone connection, Opinta’s onboard storage and listed playback time are more relevant.
The water ratings also point to different use cases rather than interchangeable protection. Opinta is specified as IP68 and explicitly described for swimming, with MP3 mode required underwater. Thunelec is rated IPX7 and described for sweat, rain, and splashes. That makes Thunelec a plausible workout or rainy-commute option, but the supplied details do not establish it as a swimming headphone.
Fit and awareness are another real dividing line. Opinta leaves the ear canal open, which may suit people who prefer to hear more of their surroundings while exercising. Thunelec’s in-ear fit and ANC are better aligned with listeners trying to reduce distractions. Its transparency mode can bring surrounding sound back into the listening experience, but it remains an in-ear design.
For a traveler looking for comfortable ear clip headphones for travel, neither product is described as an ear-clip model. Opinta’s open-ear design may be closer to the preference for a less enclosed fit, while Thunelec offers silicone tips in three sizes. Likewise, someone searching for noise canceling earbuds for motorcycle use should not assume ANC makes riding safer or appropriate; the product information describes noise control for listening and calls, not motorcycle use. And despite searches for sleep headphones detachable mic, neither product is described as having a detachable microphone or sleep-specific design.
In my opinion, I’d buy Opinta Swimming Headphones if I wanted one pair for swimming and sports running. Its open-ear bone-conduction design, onboard MP3 storage, IP68 rating, and night safety lights make a focused package for those activities. I’d choose Thunelec instead for commuting, calls, and noise control. For my stated sports-running use, Opinta is the more suitable fit.
FAQ
No. The product information says Bluetooth connectivity is not supported underwater. For swimming, use MP3 mode and the built-in 32GB storage.
They have an IPX7 rating and are described as resistant to sweat, rain, and splashes. The provided information does not describe them for swimming or underwater listening.
Thunelec is the clear match for those needs: it includes ANC, ENC, and transparency mode. Opinta’s listed strengths are open-ear listening, water use with MP3 mode, and built-in storage rather than noise cancellation.
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