Design: In-ear, Driver: 6mm, Bluetooth Standard: 5, Bluetooth Chipset: PAU1603, Battery Type: Lithium, Battery Life: LE400W, Up to 4 hours of listening time with a single charge, LE400W with Charging Case, Up to 16 Hours of listening time, Impedance: 16±10%, Sensitivity: 95±3dBA,3mW, Frequency Response: 20 - 20000Hz, Nominal THD: <5% at 1000Hz, Special Features: Automatic Connection, In-built Microphone, Single Earbud Use, Touch Control for Volume Adjustment, Play/Pause/Skip & Voice Assistant, CONNECTORS: Power: USB Type C (Female)