My favorite part of the QC 25s is the top of the band, which is wrapped in a soft-touch black canvas cloth with squeezably soft, jet-black faux suede. The lower part of the headphones, including the outer earcups, is made of matte plastic. The earcups are gray and feature a ridged chrome Bose logo.y favorite part of the QC 25s is the top of the band, which is wrapped in a soft-touch black canvas cloth with squeezably soft, jet-black faux suede. The lower part of the headphones, including the outer earcups, is made of matte plastic. The earcups are gray and feature a ridged chrome Bose logo.
In an application like that, they could expect to see an OPTIMA battery last up to four years. However, in a more moderate climate, like San Diego, if someone might see four years out of a flooded battery, they could see up to eight out of an OPTIMA. How the batteries are used also impacts performance and lifespan.
The Ni-Cad rechargeable batteries will last about two years if you take care of them and periodically allow your lights to recharge. Replacement batteries can also be ordered from the manufacturer or online. The LED light bulbs will run up to 100,000 hours each and are not replaceable.he Ni-Cad rechargeable batteries will last about two years if you take care of them and periodically allow your lights to recharge. Replacement batteries can also be ordered from the manufacturer or online. The LED light bulbs will run up to 100,000 hours each and are not replaceable.