Features 1.Multi Purpose: Assembled engineering vehicle can exercise children's hands on ability, and assembled toys can also be used as ornaments. 2.Optical Sensor: Buildable vehicles toys adopts optical sensor, which can read the black line drawn on white paper. 3.Exquisite Gift: Building block car toys can be given to children on birthdays or festivals, and they will love it. 4.Easy to Use: Assembled engineering vehicle can be moved by turning on the power switch, which is very interesting. 5.Exquisite workmanship: Built Vehicles Toys are made of exquisite workmanship, with fine details and lovely appearance. Specification Item Type: Assembled Engineering Vehicle Material: Plastic Type of Battery: Main 2 x AAA(Shipped Without Battery) Applicable Age:Above 3 Years Old Package List 1 x Main Body 1 x Pen 116 x Plastic Building Blocks 1 x Paper 1 x User Manual NoteShipping without batteries.