Crayon Sky Music

I just got a new bass, but no manual came with it.?

http://www.guitarcenter.com/Squier-by-Fender-Deluxe-Jazz-Bass-Active-V-5-String-Bass-512618-i1173146.gc?buildkit=1
Thats the bass I got. No manual to instruct me. Sooo It has this thing on the back with a 9 volt battery in it and I dont know what it does.
Any thoughts?
And its strung DEADG, can I buy strings to make it EADGB?
Look wiseguys I know how to play it. It just has features I have never seen before and I dont know what they are.

I’ll give you a copy of ur bass’s instruction manual

“Pluck the strings” There. Dam im generous, it must be christmas.

Squier Jazz Bass short solo impro … what ??!!!