1. 99% overall specificity with "out-of-the box settings". Hintringer F et al: Comparison of the specificity of implantable dual chamber defibrillator detection algorithms. PACE 2004;27:976-982. 2. Unique long cycle search criteria is used to avoid treating AF that is rapidly conducted to the ventricle, and thus limits inappropriate therapies for AF to 0.3% to 0.8% risk per patient. Mletzko R et al: Enhanced Specificity of a Dual Chamber ICD Arrhythmia Detection Algorithm by Rate Stability criteria. PACE 2004;27:1113-1119.