I have a Nuvi 1490T as well . I do not think I would like the smaller size -lrb- 3.5 '' -rrb- , but it be really convenient to slip into a pocket for gp or camera use . I have be impress with the quality of the jpg picture . if there be one drawback to this unit , it be that the battery do seem to wear down quickly . I find that surprising , as the this replaceable battery be much bigger than most gp or cell phone battery . glad I buy it though .