PUI Audio AOM-4544P-NF Current: 500?µA Depth: 4.5 mm Diameter: 9.7 mm Dimensions: 4.5 mm D Direction: Omnidirectional Directional Properties: Omnidirectional Filter Type: - Frequency: - Impedance: 2.2K Ohm Lead Free Status / Rohs Status: Lead free / RoHS Compliant Operating Voltage: 1.5 V Port Location: Top S/n Ratio: 60dB Sensitivity: -44dB ?±3dB Series: Projects Unlimited Size / Dimension: Circular - 9.7mm Dia x 4.5mm H Termination: Solder Pins/Posts Termination Style: Pin Type: Electret Condenser Voltage - Rated: 1.5V