This Hasbro Optimus Prime The Last Knight Voice Changer Helmet is a must-have for any action figure collector. The blue helmet features a Knight character design and is in excellent working order. It comes from the brand Hasbro and is an action figure type toy. The helmet is perfect for fans of the Transformers franchise and collectors alike. It has a unique voice changer feature that allows you to change your voice with a simple button press. The helmet is in the colour blue and is part of the Action Figures & Accessories and Toys & Games categories.