|Rated Voltage||1.0 V||1.5 V||12.0 V|
|Operating Voltage||1-2 V||3-7 V||7-16 V|
|Sound Output at 10cm (dB)||80 dB||85 dB||85 dB|
|Current consumption||30 mA||40 mA||40 mA|
|Operating Temperature (℃)||-20~+70℃||-20~+70℃||-20~+70℃|
|Storage Temperature (℃)||-30~+80℃||-30~+80℃||-30~+80℃|
E-Sound Electronics Co., Ltd. was first founded in 1989 and became a high-tech company in 1994. Combining R&D and production, E-Sound is specialized in innovation of technology and service in electro-acoustic field.