My book offer.com is a very bad site for online shoping and I am requested to all my online shopper people do not book any product in this type of website . Its totally fradulant wedsite I am also book a samsunag power bank and paying the money which is a not usuable dor any days and for going for repair.but did not work after I am complain the wedsite and also do the email but did not taken any action after then am broken this product and found the very junk battery u can also check my complain respect or jugde my feedback if rhis type activities avlaivle I am not tell u any thing wrong so that u should be aware for this fradulant .