The LifePak CR2 Training System realistically simulates the operations of a LifePak CR Plus AED with voice prompts, audible alerts, and readiness display features. The AED Trainer guides the user through simulated heart rhythm analysis, simulated shock prompts and therapy delivery, and CPR instruction.For use in temperature-controlled areas protected from precipitation. Capable of withstanding heavy usage and prolonged periods of operation.Physical CharacteristicsHeight: 27.2 cm (10.7 in), with handleWidth: 21.8 cm (8.6 in)Depth: 8.6 cm (3.4 in)Weight: 1.8 kg (3.9 lbs), with batteriesBatteries 6 volts/4 cells, range 3.3–6.6 Vdc. Four nonchargeable D-cell alkaline batteries. New batteries will provide no less than 100 hours of continuous operation at volume 4.Buttons Language, Power, Child Mode, ShockDisplay Power Indicator: Off when the device is off; On when the device is in use or setup mode; flashes when the device is in standby mode (lid is closed).Scenario OptionsDevice Type: Semi, Fully AutoNumber of Events: 1, 2, 3, 4, RepeatShock Advised: Yes, NoCPR Metronome: Hands-only, 30:2CPR Time: Short, 60s, 120s, 180sNo CPR Detected: On, OffMotion Detected: On, OffBilingual: On, OffSecond Language: AllCheck Breathing: On, Off This product is not a substitute for direct medical attention from a healthcare practitioner. Always read the label and follow the directions for use.