**Product Specifications:**
**Brand:** SoundCore
**Model:** A3953
**Type:** Active Noise Cancelling True Wireless Earbuds
**Dimensions:** 58.76 x 56.50 x 29.13mm (earbuds charging case)
**Weight:** Earbuds: 5.8g x 2, Charging case: 44g
**Bluetooth Version:** 5.3
**Waterproof Rating:** IPX4
**Warranty:** 18 months
**Color:** Black
**Interface:** USB-C
**Battery Life:** Up to 28 hours (earbuds + charging case)
**Quick Charge:** 15 minutes for 3 hours of playback
**Features:**
- ACAA 3.0 Ultra HD Sound Quality
- Coaxial Acoustic System
- LDAC Triple High-Resolution Transmission
- Health Monitoring Sensors (heart rate, stress levels)
- Customizable Active Noise Cancellation
- Dual-Layer Air Capsules for Comfortable Fit
- Gyroscope for Dynamic Head Tracking
- 6-Microphone AI Call Noise Cancellation
- HearID Sound Customization
- Multi-Scene Spatial Audio
- Automatic Ear Detection and Connection
- Dual Device Connectivity
**Health Monitoring:**
- Heart Rate Monitoring
- Stress Monitoring
- Exercise Tracking
**Sound Modes:**
- Music Mode
- Movie Mode
**Control Features:**
- Touch Controls
- Voice Assistant Support
**Package Contents:** Liberty4 Earbuds, Charging Case, Quick Start Guide
**Compatibility:** Works with both Apple and Android devices
**Additional Information:** Not intended for medical purposes; Heart rate monitoring feature requires activation in the SoundCore app; Customizable noise cancellation profiles based on individual ear shape; Personalized fit with dual-layer air capsules; Patented slide-open charging case design; Supports HearID ANC, Transparency, and Normal modes for environmental awareness; Customizable touch controls via SoundCore app.
Please note that the provided specifications are based on the information provided and may be subject to change or updates by the manufacturer.
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