1.Place of Origin:Zhejiang, China (Mainland) 2.Brand Name:HUAAN 3.Model Number:LZJ-D471 4.voltage::12V 5.Battery::3.5AH 6.Nail space::less than 70mm 7.Nail length::35mm 8.Size::670mm*450mm*105mm 9.Weight::15kgs 10.Max extension length::8m 11.Wireless control distance::150m 12.spread and shrink speed::1.2m/s( 100times with full charge of capacity) 13.Cerrification:ISO9001-2000,ISO 14001