SPEAKER 20X40MM 4OHM 2W PAPER; Transducer Function:Speaker; Power Rating RMS:3W; Impedance:4ohm; Sensitivity (dB):-; Resonant Frequency:400Hz; Frequency Response Min:200Hz; Frequency Response Max:20kHz; Product Range:-; SVHC:No SVHC (07-Jul-2017); External Depth:5.8mm; External Height:40mm; External Length / Height:40mm; External Width:20mm; Magnet Diameter:14.5mm; Operating Temperature Max:60°C; Operating Temperature Min:-20°C; Sound Level SPL:83dB; Speaker Cone Material:Paper; Weight:7.6g