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LAUNCH DATE2 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Released | — | 2026-09-24 |
| Status | — | Available |
ADDITIONAL INFORMATION4 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Launch Price | — | CNY 1,199 — China |
| Launch Price (USD) | $149.99 (reference only — see Price in Nigeria above for the actual retail price) | — |
| Models and regions | — | China (pre-sale price CNY 1,099 from 22 Sep, sales from 24 Sep 2026) |
| Price in Nigeria | ₦210,000 | ₦250,600 (estimate, converted from China launch price) |
PRODUCT OVERVIEW5 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Brand | Soundcore | OPPO |
| Category | True Wireless ANC Earbuds | In-ear true wireless earbuds |
| Launch Date | September 29, 2022 | September 22, 2026 |
| Model Name | Liberty 4 | Enco X4 |
| Price | $149.99 USD | CNY 1,199 (China launch) |
AUDIO SPECIFICATIONS5 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Driver Size | 9.2 mm + 6 mm | 11 mm |
| Driver Type | Dual dynamic drivers (ACAA 3.0) | Coaxial dual drivers: 11 mm dynamic bass driver (polymer diaphragm) + 6 mm tweeter, dual DAC crossover; tuned by Dynaudio |
| Frequency Response | — | 10 Hz - 40 kHz |
| Sound Features | — | 24-bit/48 kHz lossless; Chip: 6nm chip |
| Spatial Audio | Yes, with dual modes | — |
FEATURES AND SOFTWARE10 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Active Noise Cancellation (ANC) | Yes, adaptive ANC | Yes, adaptive ANC (up to 99.8% suppression of everyday noise) |
| App Support | Yes, soundcore app | HeyMelody app |
| Customizable EQ | Yes, 8-band custom EQ, HearID and 20+ presets | Yes, 5 Dynaudio sound styles in HeyMelody app |
| Find My Earbuds | Yes, via Soundcore app | — |
| Heart Rate Monitor | Built-in PPG heart rate sensor | — |
| Other Features | — | AI translation (20+ languages), spatial audio |
| Sound Modes | ANC, Transparency, Normal; Spatial Audio (Music, Movie) | Original Sound, High-Resolution, Pure Vocals, Clear Treble, Surging Bass |
| Touch Controls | Customizable touch controls | Pressure and slide controls, head-motion gestures |
| Transparency / Ambient Mode | Yes | Yes |
| Voice Assistant Support | Siri and Google Assistant compatible | Xiao Bu voice assistant |
CONNECTIVITY AND INTEGRATION5 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Bluetooth Version | Bluetooth 5.3 | 6.1, up to 10 m |
| Multipoint | Yes, up to 2 devices | Yes, dual-device |
| Range | Approx. 18m / 60ft | 10 m |
| Supported Codecs | SBC, AAC, LDAC | SBC, AAC, LHDC, LC3 |
| Wired Mode | No | — |
BUILD AND DESIGN6 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Colors Available | Midnight Black, Pearl White, Ocean Blue, Champagne Gold | Soft White, Pink Gold, Titanium Gray |
| Dimensions | — | Earbud: 32.11 x 18.19 x 21.03 mm; Case: 63.40 x 49.50 x 25.55 mm |
| Form Factor | In-ear true wireless with silicone tips | In-ear true wireless earbuds |
| Ingress Protection | IPX4 | IP55 |
| Materials | Plastic charging case | — |
| Weight | 5.6 g per earbud | 5.6 g (each earbud), 41.8 g (case), 53 g (total) |
BATTERY CAPACITY AND CHARGING5 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Charging Port | USB-C | USB-C wired and wireless charging; approx. 55 min (earbuds), 65 min (case wired), 2.5 hours (case wireless) |
| Device Battery Capacity | — | 65 mAh (each earbud), 576 mAh (case) |
| Fast Charging | Yes, 15 min = 3 hours | Yes, 10 min for up to 4.5 hours |
| Total Playtime | Up to 9 hours (ANC off); 28 hours with case; 7 hours / 24 hours with ANC | Earbuds: Up to 13 hours (ANC off, AAC), 10 hours (LHDC), 6 hours (ANC on, AAC); With case: Up to 53 hours (ANC off, AAC), 42 hours (LHDC), 22 hours (ANC on, LHDC) |
| Wireless Charging | Yes, Qi-compatible | Yes |
MICROPHONES AND VOICE FEATURES3 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Hands-Free Calls Support | — | Yes |
| Mic Count | 6 | 4 (3 mics + 1 VPU bone-conduction mic) |
| Mic Type / Noise Reduction | AI-based call noise reduction | Includes VPU bone-conduction mic |
BOX CONTENTS5 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Ear Tips (if earbuds) | 4 sizes (S, M, M2, L) | XS, S, M, L foamed silicone tips |
| Extras (cases, clips, mounts, etc.) | Built-in heart-rate sensor | — |
| Included Items | Earbuds, charging case, USB-C charging cable, ear tips, user manual | — |
| Main Device | — | Enco X4 earbuds |
| User Manual | — | Yes |
COMPATIBILITY2 fields
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Operating Systems | iOS and Android | Android, iOS |
| Supported Devices | — | China-market model; no word on global availability |
KEY HIGHLIGHT1 field
| Specification | Liberty 4 | Enco X4 |
|---|---|---|
| Highlight | Among the first mainstream true wireless earbuds to add a built-in heart rate sensor, positioning it as a fitness-oriented alternative to AirPods Pro. | The OPPO Enco X4 are Dynaudio-tuned flagship earbuds with a coaxial 11 mm dynamic bass driver and 6 mm tweeter driven by dual DACs, powered by a new 6nm chip. |