Recently we export some silver color portable slim power banks to airline,8000mah high capacity,Satin-finished aluminium shell and drop-resistance, with 4 LED indicators and torch light, lithium polymer battery,5V 1A 5V 2.1A dual USB output fast charging mobile phone power banks.The design is elegant,very popular in European market. We found now the coffee shops/airline/hotel/restaurants...they have very good service,supply enough portable mobile phone power banks for customers,it's really so sweet and convenient.