... 1,"three two one,GO!" voice prompt before countdown2,projection sports timer3,with CE,RoHS4. two years warranty5,character height: ... . Operation circumstance: -30 ~65 ; 0~95% relative humidity8. Power source: AC 110V/260VDelivery timeIndoor screen : 1 weekOutdoor screen 2 ... norms1,clock precision Less than2 seconds on a daily basis2,power supply AC110-2503,Operation circumstance: -30 ~65 ; 0~ ...