The Soul Tiger is a true work of wonder. This kit is an awesome build that actually makes one feel accomplished when it's complete and working. This kit incorporates fiber optics that run throughout the body and light up a wicked red when the head that acts as the engage switch is positioned upward. This kit also has the ability to walk. The best of both worlds here, very impressive. Soul Tiger is one of the higher priced kits, yet it is worth every penny, don't miss this one!