OPPO’s Enco Clip2 Open Earbuds use an open-ear, clip-on design built around a thin shape-memory nitinol ear cuff rather than an in-ear tip. The product combines that form factor with dual full-range dynamic drivers, LHDC 5.0 audio, Bluetooth 6.1, dual-device connectivity and AI-assisted call features.

OPPO says the earbuds can provide up to 40 hours of playback when used with their charging case in AAC mode. The company rates the total at up to 36 hours in LHDC mode. These are manufacturer figures measured under specified conditions, not independent test results.

Contents

What changed in the design

The Enco Clip2 does not seal the ear canal like a conventional in-ear earbud. Its “Unibody Ear Cuff Design” uses an arc that sits around the ear, with the audio hardware positioned to deliver sound without an ear tip.

Open-ear designs can help users remain more aware of surrounding sounds and avoid placing an ear tip in the ear canal. They also depend more heavily on fit, acoustic directionality and the surrounding listening environment. Sound that is adequate in a quiet room may be harder to hear in louder conditions, although the supplied product information does not provide independent measurements of this effect.

The cuff’s connecting arc is made from a shape-memory nickel-titanium alloy, commonly called nitinol.

OPPO says its laboratory bent the nitinol sheet more than 30,000 times under controlled conditions. The product page cautions that real-world performance can vary depending on bending angle, applied force, configuration and manufacturing variation. The test therefore indicates a controlled durability result rather than a guarantee of service life for every user.

The company also says its fit research involved more than 3,500 human ears and informed the clamping curve. OPPO states that the Enco Clip2 received TÜV Rheinland’s “Comfortable Fit” certification after objective testing and real-user ergonomic assessments. The supplied page does not provide the certificate number or the underlying test report, and comfort will still vary with ear shape and individual sensitivity.

The earbuds support adaptive stereo-channel technology. OPPO says this allows stereo sound when wearing either one earbud or both, with symmetrical use in either ear. The page also notes that automatic left-right recognition can vary with head movement, posture and wearing duration.

How the audio and call systems work

The earbuds use dual full-range dynamic drivers and two digital-to-analogue converters, or DACs. A DAC converts digitally encoded audio into an analogue electrical signal that can drive a speaker. The presence of two drivers and two DACs describes the hardware arrangement, but does not by itself establish better audible performance.

OPPO says the earbuds were tuned in partnership with Dynaudio and support LHDC 5.0. Bluetooth codecs determine how audio is encoded for wireless transmission, but the result also depends on the source device, software support, connection conditions and listening environment. OPPO states that Hi-Res audio support requires compatible hardware and software and is unavailable on iOS devices.

The product page describes a dipole sound-field design intended to reduce leakage. According to OPPO, a rear vent emits reverse waves to counter part of the sound travelling outward. The supplied information does not include measured leakage levels, so the practical privacy benefit remains a company claim.

For calls, OPPO lists a dedicated AI call-clarity neural processing unit, or NPU, alongside VPU-enhanced bone conduction and an AI large-model clear-call algorithm. The page presents these components as a system for improving voice pickup and reducing unwanted sound.

However, OPPO does not publish independent speech-intelligibility scores, noise-reduction measurements or results from controlled noisy environments in the supplied material. The advertised call performance should therefore be treated as a product claim rather than an independently established result.

Battery, connectivity and compatibility

OPPO rates the Enco Clip2 for up to 9.5 hours of playback from the earbuds alone in AAC mode, or up to eight hours in LHDC mode. With the charging case, the figures rise to up to 40 hours in AAC and 36 hours in LHDC.

The 40-hour AAC result was measured by OPPO in laboratory conditions at 50% volume. The company says actual playback can change with volume, settings, calls, wireless interference and enabled features. The page does not state the charging time or the case’s battery capacity.

The earbuds support Bluetooth 6.1 and simultaneous connection to two devices. OPPO lists a maximum transmission distance of 10 metres between the earbuds and a Bluetooth device, while warning that electromagnetic interference can interrupt the connection.

AI Translation requires pairing with selected OPPO phones running ColorOS 15.0.1 or later. Android and iOS users can use the HeyMelody application subject to the stated requirements: Android 8.0 or later and iOS 13.2 models. Some controls and features may therefore depend on the phone, operating-system version and app support rather than the earbuds alone.

The earbuds are rated IP55 for dust and water resistance. This rating applies to the earbuds, not the charging case. IP ratings describe resistance under specified test conditions; they do not mean the product is safe to submerge. OPPO also advises users to dry the earbuds before placing them in the case and cautions against using them during strenuous exercise because perspiration may cause damage.

Limits and what remains unknown

The supplied global product page does not state a launch date, price, regional availability or India-specific release information. It also does not provide the earbuds’ weight, driver size, frequency response, charging time or case battery capacity.

Most of the performance information comes from OPPO’s own specifications, laboratory tests or attributed design claims. Independent testing would be needed to assess:

  • sound quality and the practical effect of the dual-driver and dual-DAC configuration;
  • sound leakage in quiet and noisy environments;
  • call clarity and noise reduction;
  • comfort across different ear shapes;
  • real-world battery life;
  • the durability of the nitinol cuff during ordinary long-term use; and
  • the usefulness of dual-device switching and AI Translation.

The Enco Clip2’s technical proposition is therefore clearest at the design level: it combines an open-ear ear-cuff form with a shape-memory metal arc, wireless high-resolution codec support, call-processing hardware and long claimed battery life. Whether those features translate into better everyday listening or calling will depend on fit, device compatibility and independent measurements that are not included on the supplied page.

Sources