The SR735i scale has a large weight capacity with a continuous arch that will easily accommodate patients with walkers, canes, wheelchairs, powerchairs, and dialysis chairs. It is made of steel, is durable and easy to clean with a surface of 32" by 40". The memory recall uses the last stored weight and is battery operated with six “D” cell batteries providing 10,000 weigh cycles. A Programmable Auto Power Down function (APD) conserves battery life. The scale can calculate BMI calculation by entering your height to calculate and display Body Mass Index. A Serial Data Output (EHR) can be used to communicate with Electronic Health Record systems.