"◇Output power: RMS 2*2W+5W
◇Signal to Noise: above 80 Db
◇Alt cell: speaker with 1 inch gamut high density prevent magnetism :
◇Undertone: speaker with 2 inch undertone rubber prevent magnetism
◇Transformaer 1pcs
◇(Optional)build �n battery rechargeable high capacity battery
◇Work time for build in battery : 2-5 hours
◇Input port: input with 3.5 mm circuitry
◇Circuitry input impadance; 8ohm
◇Input pressure: 6V 800 mAh DC( positive outside and negative inside)
◇Power adapter:100�40 V AC"