Effortlessly transition from corded to cordless without compromising performance. Balanced with a unique ergonomic battery for optimum performance and handling. The DTSC 400 provides the same functionality of its corded counterpart but with hybrid power options - use it cordless or corded. The 18-volt Ergo battery provides up to 30 minutes of runtime at full power. Integrated, removable Protector provides protection to abutting surfaces as well as the pad for up close sanding applications.