Knowles Dumbo speaker driver - now out of production
Quality 13x18 mm driver - no crackles or distortion - engineered in the USA
Overall: 13x18x4.6 mm
Does not include speaker enclosure (can be supplied if required)
Nominal power output: 0.7 W (300 - 20,000 Hz; self resonant @ 650 Hz)
Impedance: 8 Ohms