1. The model 5512 is the claical 4WD rock crawler rc car. 2. The model 5514 is also 4WD rock crawler rc car, but it is with real light on the top and with real spare tire. 3. For all the orders that shipping from China, the battery will be placed inside the battery compartment of the car. Please take off the compartment lip to find the battery. 5. Please charge the battery for about 2 hours before the first time use. Because the new battery is lack of power. ================================================================================== Item No.: 5512 Material: ABS Plastic+Metal Function: Move Forward/Reverse, Turn Left/Right, 4 Wheels Drive Frequency: 2.4Ghz Speed: About 10km/h Maximum Climbing Gradient: 45 Size: About 27cm*16cm*12.8cm (Measured by hand, 1-2cm error may be existed by different measure way) Remote Control Distance: About 30 meters Battery Type: 3.7V (Rechargeable), SM 2P Connector Battery Capacity: 1000mah Charging Time: 2-3 hours Battery Lasting Time: About 30 Minute Item No.: 5514 Material: ABS Plastic + Metal Frequency: 2.4Ghz (Ttwo or more cars can play together, they will not interfere each other) Function: Move Forward/Backward, Turn Left/Right, 4 Wheels Drive, With Real Spare Tire With real light on the top. The light will be lit when the car drives forward. Speed: About 10km/h Maximum Climbing Gradient: 45 Size: About 28cm*16cm*15cm (Measured by hand, 1-2cm error may be existed by different measure way) Remote Control Distance: About 30 meters Battery Type: 3.7V (Rechargeable), SM 2P Connector Battery Capacity: 1000mah Charging Time: 2-3 hours Battery Lasting Time: About 30 Minute