Layered structure with bold, easy-to-follow graphics so that users, trained or untrained, clearly understand by which step they can start with. Effective timing and voice guidance for users. cprINSIGHT technology: Analyzes heart rate during chest compressions. Detects background noise and adjusts the volume accordingly for clearly audible instructions. The device can switch between two preset languages when in use and adapts to difficult environmental conditions. The DAE LIFELINKcentral remotely monitors and alerts if the unit experiences a malfunction that could affect its operational availability. Dimensions: 22.6 x 27.4 x 9.7 cm. Weight: 2.0 kg