Sixty black, glossy, round-shaped objects lay neatly within the two cases before Han Xiao. These were the 'Highly Explosive Delay-action Shrapnel Bombs', known as time bombs for short, that he had purchased from Division 13, and their unnecessarily long name, if anything, was telling of their destructive capabilities.
"Each bomb costs $800, so sixty of them amount to $48,000. Hmm, yep… this calculation should be right."
Although the bombs were ready-to-use, Han Xiao decided to perform some modifications on them. With [Basic Mechanical Engineering], he made them flight-capable by installing mini-propellers on them, along with power supplies. This greatly improved their range of attack.
The only downside to this modification was that it made them look… rather comical. They now almost seemed like the kind of gadget that a certain likable, blue, robotic cat (A Doraemon reference) would pull out from his pouch.