

Soundcore Liberty 4 Pro True Wireless Earbuds
Hear the world while you hear your music. The Soundcore C40i open-ear earbuds from Anker deliver premium audio without sealing your ears off — perfect for runners, commuters, parents, and anyone who needs to stay aware while staying immersed. Lightweight, comfortable for all-day wear, and engineered with Anker's signature sound quality.
Key Features
- Open-Ear Design — Stays on your ear, not in it. No ear fatigue, no canal pressure, no isolation from your environment
- Stay Aware, Stay Safe — Hear traffic, conversations, and your surroundings while enjoying music — ideal for outdoor running, cycling, and city commutes
- 17mm Dynamic Drivers — Larger-than-typical drivers deliver punchy bass and clear vocals that compete with sealed earbuds
- BassTurbo Technology — Anker's proprietary tuning enhances low-frequency response without sealing the ear canal
- Hi-Res Audio Wireless Certified — LDAC codec support for studio-grade wireless audio with compatible devices
- Bluetooth 5.4 with Multipoint — Connect to two devices simultaneously, swap between phone and laptop seamlessly
- Up to 36 Hours Total Playback — 7 hours per charge plus 29 additional hours from the wireless charging case
- IPX4 Sweat & Splash Resistant — Workout-ready and weather-tolerant for runs, gym sessions, and unexpected showers
- Customizable EQ via Soundcore App — 22 EQ presets plus custom HearID personalized sound profile
Why Open-Ear Beats Sealed for Active Use
Traditional in-ear earbuds isolate you from your environment — great for plane rides, dangerous for jogging through traffic. Open-ear designs sit just outside the ear canal, directing sound inward while leaving you fully aware. The C40i's curved-fit design hooks gently behind the ear for stability during runs, push-ups, and head movement without the squeeze of canal-style earbuds.
Technical Specifications
| Driver | 17mm dynamic with BassTurbo |
|---|---|
| Audio Codecs | LDAC, AAC, SBC |
| Hi-Res Audio | Wireless certified |
| Bluetooth | 5.4 with multipoint |
| Battery Life (Buds) | Up to 7 hours |
| Battery Life (with Case) | Up to 36 hours total |
| Charging | USB-C, Qi Wireless |
| Water Resistance | IPX4 |
| Microphones | AI-enhanced dual mic per bud |
| Connectivity | Bluetooth 5.4, Multipoint pairing |
| App | Soundcore (iOS, Android) |
| Weight (per bud) | ~7g |
| Warranty | 18-Month Limited (Anker) |
What's in the Box
- Soundcore C40i Open-Ear Earbuds (L + R)
- Wireless Charging Case
- USB-C Charging Cable
- Quick Start Guide
- Welcome Card
Frequently Asked Questions
Will sound leak so others can hear my music?
At reasonable listening volumes (50-70%), sound leakage is minimal — comparable to whispered conversation. At max volume in quiet environments, nearby people may hear faint audio. For commutes and outdoor use, sound leakage is a non-issue.
Are these good for phone calls?
Yes. AI-enhanced dual microphones per bud combined with Anker's noise reduction algorithm deliver clear voice quality even on busy streets. Multipoint pairing means seamless switching between calls and music.
Do they fall out during workouts?
The curved over-ear hook design holds securely during running, jumping rope, and weight training. Heavier impact activities (combat sports, gymnastics) may benefit from sealed ear hook earbuds instead.
How does this compare to AirPods?
Standard AirPods (non-Pro) are also open-ear style. The C40i offers larger 17mm drivers, longer battery life (36hrs vs 30hrs total), Hi-Res LDAC audio support, and the Soundcore app's deeper EQ customization — all at significantly lower cost.
Are these eligible for B2B and education volume pricing?
Yes. Orders of 10+ units qualify for tiered pricing with Net-30 terms for approved businesses. Contact our sales team for a custom quote.
Authorized Anker reseller. Brand-new, factory-sealed, full manufacturer warranty. B2B, government, and education pricing available — talk to a real person, not a chatbot.
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In stock! Ships within 1-7 business days.

Soundcore Liberty 4 Pro True Wireless Earbuds
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