This manikin is suitable for BLS(Basic Life support) and AED (Automated External Defibrillator) training. 1.Opening or closing the cover will turn on AED instrument. 2.Simulate first-aid procedure;GD/AED99D(only for training use)has not high tension shock motion. 3.Automatically check the position of electrode pad. 4.There are 9 internal scripts,simulating different conditions. 6.Electricity management function:The system automatically checks the batteries electricity.When the electricity is low,there will be sound indicating.During the interval of two times,system will enter saving power mode.If there isn't operation in 3minutes,system will enter waiting mode. 7.Lithium battery Features of GD/AED99D: Features of half-body CPR manikin: 1.Simulate airway opening 2.External breast compression:sound prompting 3.Artificial respiration:observe the fluctuation of chest (Inhalation standard:=500/600ml-1000ml=) 4.Operation frequency:100 times per minute (the latest international standard) 5.Operation mode:exercise mode