The adventure takes off with the Transformers Optimus Prime Battle trailer. This fascinating Transformers toy offers lots of different ways to play with it. The 12.5 cm tall Optimus Prime figure can be transformed into a truck and then the trailer can be attached to it. Departure. Then the Optimus Prime action figure can be transformed back into robot mode and the blaster on the playset can be flipped up to reveal a battle station. The figure can be placed in the battle station and the light-up blaster and projectile launcher provide even more action. Simply insert a projectile and fire it by pressing the button. With lights and unique sounds in each mode, kids can feel like they're part of the exciting Transformers: EarthSpark series. Electronic toys like the Optimus Prime Battle trailer make great gifts for boys and girls aged 6+ who love Transformers figures and toy cars.