Philips Dynamic Headphones, Speaker Diameter: 12 mm
Frequency Range: 20 - 20,000 Hz, Impedance: 16 ohms
Maximum Power Tolerance: 10 mW, Sensitivity: 104 dB (at 1 kHz)
Battery Life: 7 hours of playback on a full charge
21 additional hours from the charging case, Fast Charge: 15 minutes provides 1 hour of playback
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