Quote Originally Posted by warbird View Post
my 898 and 999 both come with the xhs-9-hdsi 180 t transducer im sure the 899 will have it also. so what is the upgrade td? i would buy the 859 and put in front with a rebate it would not cost much more than the parts your wanting. thats my .02$ i see no rebates
According to the website, the 899 and 859 both come with the standard transducer, the xnt 9 si 180 t or the xnt 9 di t. The upgrade is to the high def transducer, the hdsi. You have to upgrade to get the hdsi according to everything I can find and per Brian at BBG Marine.