1 . Operating voltage(max): 3.7 Vpp

2 . Average working voltage: 1.3 V

3 . Sound pressure level: 88dB @1kHz

4 . Current consumption(Max):130mA

5 .  Impedance: 8 ± 15 % Ohm

6 .  Frequency: 200-19000Hz

7 . Nominal input 0.5W,  Maximum input 1W

8 .  Operation temperature: -20 to +60 deg

9 .  Storage temperature: -30 to +70 deg

10 .  Size:16.8*6.8mm  and 13*4.8 mm