KYI solar traffic signal 1.)solar panel: 5W, service life time: more than 5 years. 2.)Rechargeable battery: 12V/17AH, service lifetime: 2 years. 3.)LED service lifetime: 100,000 hours. 4.)Visibility distance: 800m. 5.)Flash frequency: 24í+2 times/min. 6.) Working time: over 240 hours in cloudy days after fully recharged.