When choosing a manufacturer or brand, it should be borne in mind that manufacturers working abroad are actively updating and replacing the model range. For this reason, after the purchase of the device and its breakdown in a year or two, it may be difficult to purchase parts for repairing the device. If a specialist prefers AED equipment, then his choice should be approached in the same way as for professional devices. Do not forget that in order to avoid unpleasant cases when using the device in the field mode, you need to choose a device that works on ordinary batteries.