S5 is a brand new 4-in-1 defibrillator Monitor, it's super lightweight that supports transportation easily, 3 seconds to 200J, lighter yet faster.
S8 is a comprehensive 4-in-1 defibrillator monitor consist of defibrillatorion, AED, pacing as well as monitoring, optional 12-lead ECG and dual IBP monitoring, it also adopts a dual battery design for supporting longest lifespan.