dimension:4.8x10.2cm
crust:adopts thermoplastic ABS resin
liminotrons:3LED
?????illumination brightness of each:100000-12000mcd
?????swicel the switch up to use button battery for illumination of approximate 20 hoours
?????swivel the switch down to generate electricity by hand pressing for permanent usage
?????patent right:NO:ZL 2005 3 0086713.6
?????date:2006-4-12