HOW TO USE Use one "9V" battery Remove insulated sheet before use Place battery Properly before connect to the phone. Talk time is 50-90 mins continuously depending on the condition of mobile phone and its batery pack Most phones listed can talk immediately after connecting. Always remove charger connector from the phone when the display panel is blacked out Quantity:200pcs Dimension:39.5*27*42cm G.W.:11.5KGS N.W.:10.4KGS