The ZOLL AED Plus is the world’s first AED with real-time feedback on CPR compressions. With its’ one piece pad for easy placement, the AED will guide you to good compressions by letting you know if you are compressing deep enough. With an IP rating of 55, this AED is extremely durable in all conditions – it is protected against dust particles and water jets. This AED offers simplicity by using consumer camera lithium batteries available from most retail stores. In addition, the pads and batteries both have a shelf-life of five years – the longest on the market!