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Avantree Sky Infinity NC specifications and in-depth review

Avantree Sky Infinity NC

Manufacturer: Avantree

The Avantree Sky Infinity NC are true wireless in-ear earbuds designed for users who need reliable audio and clear communication. Weighing just 18.4 g, they sit comfortably without a neckband or wingtips, and the charging case extends total playback to 40 hours, making them a practical option for extended daily use. A mute function, voice prompts, and dual-microphone setup round out their hands-free capabilities, and a travel bag is included in the box.

On the connectivity side, the Sky Infinity NC supports a notably broad codec range, including aptX Adaptive, aptX HD, aptX Low Latency, and standard aptX, with a measured audio latency of 50 ms and a maximum Bluetooth range of 10 m. The earbuds charge via USB Type-C and support fast charging, reaching a full charge in around 2 hours. Multipoint connectivity allows pairing with two devices simultaneously, the 13 mm drivers cover a 20 Hz to 20,000 Hz frequency range, and passive noise reduction helps limit environmental sound without active noise cancellation.

Pros
  • Supports aptX Adaptive, aptX HD, aptX Low Latency, and standard aptX, covering a wide range of codec options for different use cases
  • The charging case extends total battery life to 40 hours, reducing how often the case itself needs to be recharged
  • Multipoint connectivity allows simultaneous pairing with two devices
  • Fast charging is supported, cutting down on wait time when the battery runs low
  • Includes a mute function and can be used as a headset, making them practical for calls
  • A travel bag is included in the box, adding convenience for transport and storage
Cons
  • No active noise cancellation, which limits usefulness in louder environments
  • Wireless charging is not supported, requiring a cable to recharge the case
  • No ambient sound mode, so external audio is fully blocked during use
  • Lacks in-ear detection, meaning music will not pause automatically when the earbuds are removed
  • No find device feature, which can be inconvenient if an earbud is misplaced
  • Maximum Bluetooth range is limited to 10 m, restricting movement distance from the source device
Who is this for?

These earbuds are a practical fit for users who frequently switch between two devices, thanks to multipoint connectivity that keeps both paired simultaneously without manual re-pairing. The broad aptX codec support, including aptX Low Latency at 50 ms, makes them well-suited for those who prioritize low-latency audio — whether for video calls, remote work, or casual media consumption. The 40-hour total battery life from the case, fast charging, mute function, and included travel bag also make them a solid choice for commuters or professionals who need dependable all-day use without frequent top-ups.

Who is this NOT for?

Users who require active noise cancellation to block out loud or distracting environments — such as open offices, public transit, or busy cafes — will find these earbuds lacking, as only passive noise reduction is available. Those who expect spatial audio or immersive audio formats like Dolby Atmos will not find that support here either. Additionally, fitness-oriented users may find the absence of wingtips a drawback for secure fit during physical activity, and anyone who relies on in-ear detection to auto-pause playback when earbuds are removed will need to handle that manually.

Design:

Fit In-ear
weight 18.4 g
has no wires or cables ✓
are neckband earbuds ✕
wingtips included ✕
has RGB lighting ✕
has stereo speakers ✓
has UV light ✕
Has a display ✕

The Avantree Sky Infinity NC are true wireless in-ear earbuds, meaning they operate without any cables or wires connecting the two buds. They weigh 18.4 g and feature stereo speakers for dual-channel audio output. The design does not include a neckband, wingtips, RGB lighting, a UV light, or a display, keeping the overall form compact and straightforward.

Sound quality:

has active noise cancellation (ANC) ✕
has passive noise reduction ✓
driver unit size 13 mm
lowest frequency 20 Hz
highest frequency 20000 Hz
supports spatial audio ✕
has Dolby Atmos ✕
has Dirac Virtuo ✕
impedance 32 Ohms
has a neodymium magnet ✕

The Avantree Sky Infinity NC use 13 mm drivers and cover a frequency range of 20 Hz to 20,000 Hz with an impedance of 32 Ohms. Passive noise reduction is present to help limit ambient sound, though the earbuds do not include active noise cancellation. Spatial audio, Dolby Atmos, Dirac Virtuo, and a neodymium magnet are not part of the specification.

Power:

Battery life 8 hours
Battery life of charging case 40 hours
charge time 2 hours
has wireless charging ✕
Has a solar power battery ✕
has a battery level indicator ✓
has a rechargeable battery ✓

The Avantree Sky Infinity NC have a rechargeable battery that delivers 8 hours of playback per charge, with the charging case adding enough capacity to bring the total up to 40 hours. A full charge takes 2 hours, and a battery level indicator lets users keep track of remaining power. The earbuds do not support wireless charging or solar charging.

Connectivity:

has fast pairing ✕
Has USB Type-C ✓
has LDAC ✕
has LDHC ✕
has Bluetooth LE Audio ✕
has aptX Adaptive ✓
has aptX Low Latency ✓
has aptX HD ✓
has aptX ✓
has aptX Lossless ✕
audio latency 50 ms
has aptX Voice ✕
has Auracast ✕
maximum Bluetooth range 10 m
supports Bluetooth pairing using NFC ✕
Can be used wirelessly ✓
has AAC ✕

The Avantree Sky Infinity NC operate wirelessly and support a broad set of Qualcomm aptX codecs, including aptX Adaptive, aptX HD, aptX Low Latency, and standard aptX, offering flexibility across different audio quality and latency priorities. Audio latency is rated at 50 ms, and the maximum Bluetooth range reaches 10 m. Charging is handled via USB Type-C, while LDAC, LDHC, AAC, Bluetooth LE Audio, aptX Lossless, aptX Voice, Auracast, fast pairing, and NFC pairing are not supported.

Features:

has ambient sound mode ✕
has in/on-ear detection ✕
has find device feature ✕
Supports fast charging ✓
multipoint count 2
can read notifications ✕
has a mute function ✓
can be used as a headset ✓
control panel placed on a device ✓
Has voice prompts ✓
travel bag is included ✓
Has an in-line control panel ✕
Has a temperature sensor ✕
Has a built-in camera remote control function ✕

The Avantree Sky Infinity NC support multipoint connectivity for up to 2 devices simultaneously and can function as a headset, making them suitable for calls as well as audio playback. Fast charging is supported, and the earbuds include a mute function, voice prompts, and a control panel placed on the device itself. A travel bag is included in the package. They do not offer ambient sound mode, in-ear detection, a find device feature, notification reading, an in-line control panel, a body temperature sensor, or a camera remote shutter function.

Microphone:

number of microphones 2

The Avantree Sky Infinity NC are equipped with 2 microphones to support voice calls and hands-free use.

Final Verdict

The Avantree Sky Infinity NC position themselves as a capable pair of true wireless earbuds built around practical daily use rather than audiophile ambition. Their standout strength lies in broad aptX codec support spanning aptX Adaptive, aptX HD, and aptX Low Latency, which gives them genuine versatility across different audio and latency scenarios — a clear advantage for users who work across multiple devices or care about call quality. The 40-hour case battery, fast charging, mute function, and included travel bag reinforce their appeal as a work-oriented, commuter-friendly option. That said, the absence of active noise cancellation and spatial audio narrows their appeal for users seeking a more immersive or noise-shielded listening experience. Overall, the Sky Infinity NC are a well-rounded set of wireless earbuds that serve productivity-focused and on-the-go users well, provided those users are not heavily dependent on features the earbuds do not offer.