Maximum output power: 35W±15%
 Rated output power: 25W±: 15%
 Rated current consumption: 2a±15%
 Minimum operating voltage: 8±0.5V
 Static current: 25 ± 5mA
 Static current: 40±5mA
 Battery: 10 C
 Sound: About 500m
 Alarm: About 500m
 Whistle: about 500m
 Mist flute: about 500m
 Distortion: 5%
 Efficiency: 80%±5% (Class D amplifier)
 S/N ratio: >75dB(A)
 Sound: About 8 hours
 Sirens, whistles, fog horns: about 30 minutes
 Dimensions: 225×343±5mm
 Weight: 1050g±50g (without battery)