The Blood Warmer BW 685 is a high-performance device for warming blood and infusion fluids, equipped with a microprocessor control to prevent pre-, intra-, and post-operative hypothermia. The temperature can be easily set between 37-41°C with an increase of every 0.5°C. This device is shaped like a compass, thin, and has an ergonomic design, making it easy to hang on an infusion pole.