广泛用于玩具.点/复读机 对讲机 门铃 等电子产品上，公司产品已通过REACH EN71-3 ROHS 16P检测报告。
29mm喇叭電聲特性 (ELECTRO-ACOUSTIC CHARACTERISTICS)
   3.1額定阻抗(Rated Impedance):
       8Ω ± 20%   (AT 1.6K Hz ,1.0 Vrms)
   3.2額定輸入功率(Rated Input Power)
       0.25Watt    (At  2.0 Vrms white noise 96 Hours)
   3.3  輸入功率()
       0.5 Watt
   3.4  共振頻率(Resonant Frequency)
       850 Hz ± 20%
   3.5輸出音壓(Output S.P.L)
      85± 3dB   (0.5 Watt ,Average at 400,800 ,1000 ,2000 Hz)
   3.6實效頻率範圍(Frequency Range)
      Fo ~18kHz  (By Output S.P.L. –10dB)
   3.7失真率(Distortion)
      Less than 5%  (At 1.6KHz , 2.0 Vrms)
   3.8工作溫度(Operating Temperature)
       -25℃ ~ +50℃
   3.9儲存溫度(Storage temperature)
       -25℃ ~ +55℃