Anker Liberty 4 NC (A3947 / A3947H11)
Premium True Wireless Earbuds with Adaptive ANC & LDAC
Experience powerful, immersive sound with the Anker Liberty 4 NC, engineered for exceptional audio clarity and intelligent noise cancellation. Designed with custom-tuned 11mm drivers and advanced wireless technology, these true wireless earbuds deliver rich bass, detailed mids, and crystal-clear highs — whether you’re commuting, working, or relaxing.
Immersive High-Resolution Audio
Enjoy enhanced sound quality with LDAC technology, delivering up to 3× more data than standard Bluetooth codecs for true Hi-Res wireless audio. Combined with Anker’s BassUp™ technology, every beat feels deeper, fuller, and more dynamic.
Advanced Adaptive Active Noise Cancellation
The Liberty 4 NC features Adaptive ANC 2.0, which automatically analyzes your ear canal and surrounding environment to optimize noise cancellation in real time. Block out distractions and stay focused on what matters most.
Crystal-Clear Calls Anywhere
Equipped with 6 built-in microphones, these earbuds ensure precise voice pickup and reduced background noise, so your calls remain clear even in busy environments.
All-Day Power & Fast Charging
Up to 10 hours of continuous playback on a single charge
Up to 50 hours total with the charging case
Fast charging: 10 minutes provides up to 2 hours of listening time
Perfect for travel, workdays, and long listening sessions.
Stable, Efficient Wireless Connectivity
Powered by Bluetooth 5.3 / 5.4, the Liberty 4 NC offers a fast, stable connection with improved energy efficiency for uninterrupted streaming.
Designed for Comfort & Isolation
The high-sensitivity In-Ear ergonomic design ensures a secure fit, enhanced passive noise isolation, and lasting comfort throughout the day.
Key Specifications
Model: A3947 / A3947H11
Driver Size: 11mm custom-tuned drivers
Noise Cancellation: Adaptive ANC / ANC 2.0
Microphones: 6 built-in mics
Bluetooth Version: 5.3 / 5.4
Battery Life:
10 hours (single charge)
50 hours (with charging case)
Fast Charge: 10 min = ~2 hours playback
Impedance: 10–120 Ohm
The Anker Liberty 4 NC combines intelligent noise cancellation, premium sound performance, and long-lasting battery life — making it the ideal choice for music lovers, commuters, and professionals alike.
