Perfect for DSLR and SmartPhones 3.5mm input Frequency response: 50Hz-16kHz Sensitivity enhancement + 20dB ±2dB Sensitivity: -45dB±3dB (0dB=1V/Pa at 1kHz) Equivalent noise level_24 dB A Maximum sound pressure level_130dB(THD≤1.5% at 1KHz) Output impedance:200_±30% (at 1kHz) Channel: mono Uses AAA 1.5V alkaline battery Power consumption ≤ 5mA (typical) Battery life: The new battery can be used continuously for 70-80 hours.