Detectos DR660 features a lightweight spacious 21.5 W x 17.2 D x 1.97 H inch (56 W x 44 D x 5 H cm) weighing platform, built-in rechargeable battery pack (7.2 VDC / 1200mA) which is able to provide eight hours of continuous use, or 120 VAC 60Hz powering a 15 VDC 300mA wall plug-in UL/CUL listed power supply (included). 1 inch (25 mm) high LCD digits. RS232 serial output and integral carrying handle. 660 lb x 0.5 lb / 300 kg x 0.2 kg capacity. Optional stainless steel wall-mount grab bars also available for patient stability (GBSS18-WM, 1 per).