For the Stealth Tech line, each Turtle has their signature weapon along with an unique spy-themed device or weapon. Raph, true to his nature, comes with a battering ram to fit his raging temper, while Mikey has a portable listening device, which can hook into his belt. (Either that or Mikey's just listening to his favorite tunes...)
Mikey's design is a little plain with his front armor resembles stereo speakers. On Raph's back is a portable generator-thingy, possibly for his night vision googles. His sai(s) rest in his back strap, which is a little snug against the generator-thingy. I wish they'd take the time to list the accessories and give them wacky names like in the original toy line. Then, at least, people would know what some items the figures came with actually were supposed to be. (I'm talking to you, Donny.)
The only accessory they all share is the zip line. Clipping it to the back of the character, they can fulfill your darkest Mission: Impossible desires, or just zip them across sofas and other handy furniture. The articulation is close to the original ones, but their front shells aren't softened, so the forward leg movement is limited.
Mikey's design is a little lacking, in my opinion, but they are all fun toys that both adults and kids will enjoy.