Question

you can use it as long as you like, and it will not wear out

no matter......................

Answer 1

how long you use it, it will not wear out

Answer 2

You can use it as long as you like, and it won't wear out

No matter how long you (can) use it, it won't wear out.

Answer 3

No matter how long you use it, it will not wear out

Answer 4

How long you use it it will not wear out