Upgrade PRESTAN Professional Adult and Jaw Thrust CPR Manikins with Advanced Feedback (including rate, depth, recoil, ventilation and hands-off time) via a Bluetooth enabled PRESTAN CPR Feedback app. Includes a 50 pack adult ventilation lung bags, The PRESTAN Adult Series 2000 Add-On Kit Monitor is recommended for PRESTAN 2018 manikin models or newer. Available in Single and 4-Pack. *Mobile Device is Not included