Technical Details: Adjustable Skull-iQ App Compatibility Mode of Stay-Aware Preset EQ Modes for Podcasts, Movies, and Music EQ Mode Customization Smart Mic with Clear Voice Battery Life: 60 Hours (ANC Off) Battery Life: 50 Hours (ANC On) Quick Charge (10 minutes is 4 hours) Control of Call, Track, and Volume Functions of Custom Button Technology for Tile™ Finding Tap™ Take Photo Auto Connect on Spotify Flat-folding and collapsible design of Bluetooth® v5.2 Product Type: Over-Ear Bluetooth® Connection Type: v5.2 Bluetooth The impedance 32Ω Driver; 8Ω Crusher 40mm is the driver's diameter. THD: less than 3% Level of Sound Pressure: 100±3dB at 1 kHz Response to Frequency: 20 Hz to 20 kHz 332g in weight