Sustain your ride with CatEye's Hybrid renewable energy design. Conscious design and innovative technology generate this unique dualbattery design. The solar cell charges the nickelmetal hydride battery for up to 6 hours of ride time and the alkaline backup allows for a reserve 30 hours of run time. The hybrid design allows you to choose between power sources for maximum power and run time. With flashing and constant modes, the CatEye Hybrid gives the environmentally conscious cyclist opt