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Oppo Enco Free 4
Oppo Enco X3s

Oppo Enco Free 4 Oppo Enco X3s

Common Features

  • ✓ Both products have in-ear fit.
  • ✓ Both products are water resistant.
  • ✓ Both products weigh 9.4 g.
  • ✓ Neither product has wires or cables.
  • ✓ Neither product is a neckband earbud.
  • ✓ Neither product includes wingtips.
  • ✓ Neither product has RGB lighting.
  • ✓ Both products have active noise cancellation (ANC).
  • ✓ Both products have passive noise reduction.
  • ✓ Both products have 11 mm driver unit size.
  • ✓ Neither product supports Dolby Atmos.
  • ✓ Neither product supports Dirac Virtuo.
  • ✓ Neither product has a neodymium magnet.
  • ✓ Both products have 62 mAh battery power.
  • ✓ Both products have 530mAh battery power in the charging case.
  • ✓ Both products have 34 hours battery life with the charging case.
  • ✓ Both products have 6 hours battery life with ANC on.
  • ✓ Both products have rechargeable batteries.
  • ✓ Both products have a battery level indicator.
  • ✓ Both products have a mute function.

Main Differences

  • • The lowest frequency is 20 Hz on Oppo Enco Free 4 and 15 Hz on Oppo Enco X3s.
  • • The highest frequency is 20000 Hz on Oppo Enco Free 4 and 40000 Hz on Oppo Enco X3s.
  • • Oppo Enco Free 4 does not support spatial audio, while Oppo Enco X3s supports spatial audio.
  • • Charge time is 0.85 hours on Oppo Enco Free 4 and 2 hours on Oppo Enco X3s.
  • • Oppo Enco Free 4 does not have wireless charging, whereas Oppo Enco X3s has wireless charging.
  • • The maximum Bluetooth range is 40 m on Oppo Enco Free 4 and 10 m on Oppo Enco X3s.
  • • Oppo Enco Free 4 has a built-in translator, but Oppo Enco X3s does not have this feature.
Specs Comparison
Oppo Enco Free 4

Oppo Enco Free 4

Oppo Enco X3s

Oppo Enco X3s

Design:
Fit In-ear In-ear
Ingress Protection (IP) rating IP55 IP55
water resistance Water resistant Water resistant
weight 9.4 g 9.4 g
has no wires or cables ✓ ✓
are neckband earbuds ✕ ✕
wingtips included ✕ ✕
has RGB lighting ✕ ✕
has stereo speakers ✓ ✓
has UV light ✕ ✕
Has a display ✕ ✕

Both the Oppo Enco Free 4 and Oppo Enco X3s share a number of design features. They both have an in-ear fit, an IP55 ingress protection rating, and are water-resistant. This makes them suitable for use in various environments, including with exposure to sweat or rain.

Regarding weight, both products are identical, each weighing 9.4 grams. They also share the same cable-free design, meaning there are no wires or cables connecting them, and neither product features a neckband. Additionally, neither product includes wingtips, RGB lighting, UV light, or a display.

The design elements of both products are quite similar, with no notable differences in these specifications between the Oppo Enco Free 4 and Oppo Enco X3s.

Sound quality:
has active noise cancellation (ANC) ✓ ✓
has passive noise reduction ✓ ✓
driver unit size 11 mm 11 mm
lowest frequency 20 Hz 15 Hz
highest frequency 20000 Hz 40000 Hz
supports spatial audio ✕ ✓
has Dolby Atmos ✕ ✕
has Dirac Virtuo ✕ ✕
has a neodymium magnet ✕ ✕

The Oppo Enco Free 4 and Oppo Enco X3s both feature active noise cancellation (ANC) and passive noise reduction, providing solid noise isolation. They also share the same 11 mm driver unit size, which ensures a similar audio experience in terms of speaker size.

In terms of frequency range, the Oppo Enco Free 4 covers a range from 20 Hz to 20,000 Hz, while the Oppo Enco X3s extends the range down to 15 Hz and up to 40,000 Hz. This means the Enco X3s is capable of reproducing a wider range of frequencies, particularly deeper bass and higher treble sounds.

One key difference between the two products is that the Oppo Enco X3s supports spatial audio, while the Oppo Enco Free 4 does not. Both models do not feature Dolby Atmos, Dirac Virtuo, or a neodymium magnet for their drivers.

Power:
Battery life 11 hours 11 hours
Battery life of charging case 34 hours 34 hours
Battery life (ANC) 6 hours 6 hours
charge time 0.85 hours 2 hours
battery power 62 mAh 62 mAh
battery power (charging case) 530mAh 530mAh
has wireless charging ✕ ✓
Has a solar power battery ✕ ✕
has a battery level indicator ✓ ✓
has a rechargeable battery ✓ ✓

The Oppo Enco Free 4 and Oppo Enco X3s offer the same battery life, both providing 11 hours of playback time and 34 hours when including the charging case. Additionally, both products last for 6 hours of playback with active noise cancellation (ANC) enabled.

The main difference between the two lies in the charging time. The Oppo Enco Free 4 charges in 0.85 hours, whereas the Oppo Enco X3s takes 2 hours to fully charge. Both models feature the same 62 mAh battery in the earbuds and a 530 mAh battery in the charging case.

Another distinction is that the Oppo Enco X3s supports wireless charging, while the Oppo Enco Free 4 does not. Both products include a battery level indicator and have a rechargeable battery, with no support for solar power charging in either model.

Connectivity:
has fast pairing ✕ ✕
Has USB Type-C ✓ ✓
Bluetooth version 5.4 5.4
has LDAC ✕ ✕
has LDHC ✓ ✓
has Bluetooth LE Audio ✕ ✕
has aptX Adaptive ✕ ✕
has aptX Low Latency ✕ ✕
has aptX HD ✕ ✕
has aptX ✕ ✕
has aptX Lossless ✕ ✕
has aptX Voice ✕ ✕
has Auracast ✕ ✕
maximum Bluetooth range 40 m 10 m
supports Bluetooth pairing using NFC ✕ ✕
Can be used wirelessly ✓ ✓
has AAC ✓ ✓

The Oppo Enco Free 4 and Oppo Enco X3s both feature USB Type-C charging and Bluetooth 5.4, ensuring fast and reliable wireless connectivity. Both models support LDHC but do not support LDAC or Bluetooth LE Audio. Additionally, both products have AAC audio codec support, but neither supports fast pairing or Bluetooth pairing via NFC.

One difference between the two is their Bluetooth range. The Oppo Enco Free 4 offers a maximum Bluetooth range of 40 meters, whereas the Oppo Enco X3s has a more limited range of 10 meters.

Overall, the two products are quite similar in terms of connectivity, with the primary distinction being the Bluetooth range offered by the Oppo Enco Free 4.

Features:
release date April 2025 October 2025
has ambient sound mode ✓ ✓
has in/on-ear detection ✕ ✕
Supports fast charging ✓ ✓
can read notifications ✕ ✕
Has a built-in translator ✓ ✕
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 Oppo Enco Free 4 and Oppo Enco X3s share several similar features. Both models have ambient sound mode, support fast charging, include a travel bag, feature a mute function, and can be used as a headset. They also both have voice prompts and a control panel placed on the device. Neither product supports in/on-ear detection, includes an in-line control panel, features a temperature sensor, or has a built-in camera remote control function.

The key difference between the two is that the Oppo Enco Free 4 includes a built-in translator, while the Oppo Enco X3s does not.

Overall, both products offer a comparable set of features, with the main distinction being the translator functionality found only in the Oppo Enco Free 4.

Microphone:
number of microphones 6 6
has a noise-canceling microphone ✓ ✓

Both the Oppo Enco Free 4 and Oppo Enco X3s are equipped with six microphones and feature noise-canceling microphones. This ensures clear voice capture and enhanced sound quality during calls or voice commands for both models.

As the specifications for the microphone setup are identical between the two products, there are no differences in this regard.

Overall, the microphone capabilities are the same for both the Oppo Enco Free 4 and Oppo Enco X3s.

Comparison Summary

This is a specification comparison between the Oppo Enco Free 4 and Oppo Enco X3s. Both products feature an in-ear fit, weigh 9.4 g, and have a water resistant design with an IP55 rating. They also both support active noise cancellation (ANC) and passive noise reduction. However, the Oppo Enco X3s offers a lower lowest frequency of 15 Hz compared to the 20 Hz of the Oppo Enco Free 4, and it supports spatial audio, which the Free 4 does not. Additionally, the Oppo Enco X3s charges wirelessly, unlike the Oppo Enco Free 4. The maximum Bluetooth range is also greater on the Oppo Enco Free 4, reaching up to 40 m, while the X3s has a range of 10 m.