Sound Grenade by BASU® 130db Emergency Alarm for Camping & Hiking, Tripwire, Bear, Perimeter Alarm (Outdoor, S.W.A.T. Black)

If the battery is good for a year, how do you know if, when you receive it, you still have the full year left? Does the packaging have an exp date?

Is the battery replacable and what type is it?

Can this be disarmed this *before* it goes off? I want to use it to secure a bag but I don't want the alarm to go off at all when I need to move it.

So this thing is not rechargeable and the battery cannot be replaced?