This pocket sized phone charger couldnt be simpler to user key benefits and featuresr r just insert an aa battery plug it into your mobile phone for two extra hours talk time wherever you arer compatible with ipodsr extremely durable and compactr handy for those emergency situations when mains power isnt an optionr r includedr r emergency phone chargerr r emergency phone chargeris backed by our 30 day satisfaction guarantee if you dont get the results you desire then you can simply return