Electrical Range: 220-240V AC
Frequency Range: 50Hz
Power Consumption: About 0.5-1.2W
Sound Pressure: Max 80dB
Sound Frequency: 15000-18000Hz
Radiation Angle: 150°
Effective Area: 22-28² meter (220-280² feet)

MODEL NO.: ST-82
PACKING DIMENSION: L13.8cm x W7.5cm x H20.8cm
WEIGHT: 0.91KG