How to Use: 1. Use a screwdriver to unscrew the screw on the battery cover, press the battery, turn on the switch, and the car can run. Specification: Item Type: Variety Rail Car Assembly Suitable Age: 3+ Years Old Material: Plastic + Electronic Components Weight: Approx.407g/14.4oz Battery Model: 1 x AA Battery (without Battery) Package List: 38 x Accessories 1 x Electric Car 50 x Fixed Buckle 1 x Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.