8.4 inch screen with 5-lead ECG, provide 25 types energy selections from 1 ~ 360 J; Excellent battery performace, which supports 420 times 360 J release with 2 batteries installed; 80mm width standard printer; greater range of impedance range (15~250 Ω) enables the best performace on various patients; High capacity and voice recording facilate users to review the whole process of rescue. Two battery slots, one battery as standard, optional battery USD200.00