Just received it yesterday, come with the original box,under 3 years warranty. It is cool and accurate, but it is bigger than the one I used before. See details at:
http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=dhs&cs=19&sku=A4281237&baynote_bnrank=1&baynote_irrank=0&~ck=baynoteSearch