7” HD LCD Screen. LCD screen showing voice prompt messages with step by step directions Visualized status of battery and system AED 5 require little to no maintenance. It automatically performs a self test each time you turn on the AED, and it also performs a routine self test every day, week or month Data storage of 24hrs ECG and up to 1000 events Long-life consumables - 5-year battery and pad life means fewer replacements, a low cost of ownership, and an AED that's ready for the rescue Designed to be durable, the AED Plus can be used in various environments Lithium Batteries with five (5) year shelf-life. High capacity and long-life lithium manganese dioxide battery, minimum 200 shocks, 5 years valid