Patent Product Window Breaking Tool Safety Hammer Formaldehyde Testing Function

Patent Product Window Breaking Tool Safety Hammer Formaldehyde Testing Function Description: Powered by crank dynamo&USB&AC adaptor. Charging time: 6 hours by hand cranking, 5 hours by USB connect with PC. Support around 15m lighting or 15-30m radio or 5-30m stand-by time or 3m cell phone or 3m siren&blink after 3m cranking Including safety hammer for breaking the glass in emergency. Including magnets for adsorberting on iron rapidly in emergency. Functions: Formaldehyde