Not to be confused with the (ka)Boom Box from Learn 2 Fly.
"Get a little extra kick by detonating some C4 beneath the sledge. Yes, it's perfectly safe, why do you ask?"
The description of the Boombox.
Overview[]

The Boombox is an active sledge in Learn 2 Fly Mobile. It costs 3200 coins at the Sledge Showroom.