Due to the "Silent-Seek" technology featured in these drives, the HDDs are extremely quiet: Ultra-silent single-platter drives boast acoustic specifications of 19dBA (seek) and 17dBA (idle) making them almost indistinguishable to the human hear. With its compact size and best-in class specifications, the SATA series is the perfect choice for use in devices where a combination of sleek form factor and high capacity capabilities are essential. As with all Toshiba HDDs, the complete series is halogen-free and RoHS compatible, therefore, exceptionally environmentally friendly.