receiver
1:model:RB-31440G-01R
2:dimension:31mm*4.7mm
3:spc:440ohm 0.3w~0.5w
4:low distortion,reliable,wide use

receiver

Dimension :as show in the bottom

Weight: Approx  4.0  Grams

Magnet: Material  Nd-Fe-B   Size Φ9.5×1.5mm.

Impedance: 440 ± 15%  Ohm    at 1000Hz. 1V

Power rating: Normal 0.3w   Maximum 0.5w

FO:550±20% Hz

S.P.L.: 85±3dB/0.05Watt 0.1Meter.   Average At1000 ,1182,1504,2000Hz.

Frequency range: 280~16,000Hz.Average SPL-10dB

Distortion: 10%  Maximum  At 1000Hz. 0.05W

Abnormal Sound Test: Must be Normal Tested by 11.5 Volts. Sine wave for50~5kHz

Polarity: Diaphragm Shall Move Forward When Apply a Positive DC

Operating temperature: -20 °C  to +50 °C

Storage temperature: -25 °C  to +55 °C