our company offers the automatic stapler.there are variety of colours and types.also they have the smart shape which look like very beautiful. they are completely automatic.so that you can use them very conveniently.about the power,you can use the batteries or the electrical source. please look at the images on our website.it may suprise you! Don't hesitate to contact me for more information. Hangzhou WenDu Stationery Ltd.china Address:No.1701,1-17,Fengqi Yuan,Fengqi Road,Hangzhou,China Tel:86-571-87295679-12,87292817 Fax:86-571-87295679-13 http://www.chinapen.cn http://www.wanjia-pen.com.cn Email: partner@wanjia-pen.com.cn shirley