AN-SSL-I is Anern patented design with high brightness bridgelux chips, up to 170lm/W. Adjustable angle LED module, each LED module can adjust the angle independently. Easy to installation and it take only one step to light up. Mono solar panel, up to 22% conversion efficiency. Build-in super big LifePo4 battery, lifespan up to 8 years. Intelligent dimming, extend the lighting time.