VetSpecs® FW-3 IV Fluid Warmer +6.5 x 2 x 1 inches (165 x 51 x 25 mm), 6.35 oz (180 g)Compatible with all standard IV lines, the FW-3 automatically warms the IV fluid up to 100 ºF (37.8 ºC). Simply enclose the IV line into the FW-3 and turn on the power. With the attached string, the FW-3 may be hung on the cage door, IV pole, anesthesia machine, or surgical table. The most compact IV fluid warmer currently on the market, the FW-3 is designed to be placed close to the patient for optimum warming performance. Utilizing a safe 5V DC power, the FW-3 is suitable for use in the challenging veterinary environments.