Anker Soundcore Liberty 4 Pro ANC Earbuds

Technical Specifications of Anker Soundcore Liberty 4 Pro NC TWS Earbuds

• Product Name: Anker Soundcore Liberty 4 Pro NC TWS Earbuds

• Brand: Anker Soundcore

• Model: Liberty 4 Pro

• Model Number: A3954

• Noise Cancellation:

  • 7 Sensors (6 sound sensors + 1 barometric pressure sensor)

  • 3× stronger noise reduction

  • Real-time adaptive adjustment every 0.3 seconds

• Audio Drivers:

  • Dual Driver System with ACAA acoustic architecture

  • 10.5mm bass driver

  • Titanium-coated tweeter

  • Digital crossover for optimized performance

• Audio Specifications:

  • Frequency Response: 20 Hz – 20 kHz+

  • Sensitivity: 126 dB

  • Impedance: 8Ω

  • Total Harmonic Distortion: 1%

  • Codecs: LDAC, AAC, SBC

• Microphones: 6 microphones with AI noise reduction and wind noise reduction algorithm

• Battery Life:

  • Earbuds: Up to 10 hours (ANC off)

  • With Charging Case: Up to 40 hours total

  • Earbud Battery: 56mAh each

  • Case Battery: 580mAh

• Charging:

  • 2× faster charging (5C battery technology)

  • 5-minute charge = 4 hours playback

  • USB Type-C charging

  • Wireless charging supported

• Bluetooth: Version 5.3 (range: up to 20 meters)

• Water Resistance: IPX5 (sweat and water resistant)

• Special Features:

  • Smart touch controls on earbuds

  • Case with touch display for adjusting ANC levels

  • Low latency mode

  • Wireless charging case

• Weight: Lightweight design

• Compatibility: iOS and Android smartphones, tablets, and Bluetooth-enabled devices