Features: 1. Can be assembled at anytime youself, helps to develop children' practical ability. 2. Helps to develop children' logic thinking ability. 3. The robot supports to rotate more parts in its body, such as head, arm. 4. It supports to rotate in situ 360 degree smoothly. 5. USB charging design, easy to charge. Specification: Suitable for age: older than 8 years old. Power by: 3.7V 400mAh Battery included. Charging time: 120 mins. Working time: about 40 mins. Controller: 2 x 1.5V AAA Batteries not included. Weight: about 651g. Package: 1x Robot Including Battery 1x Controller Not Including Battery 1x 3.7V Battery 1x USB Charging Wire 1x Manual Age Range: 14 years old , Grownups , 813Years Certification:3C Theme:Fantasy Sci-Fi State of Assembly:Unassembled Kit Power Source:Electric Package List: 1 x Robot Including Battery 1 x Controller Not Including Battery 1 x 3.7V Battery 1 x USB Charging Wire 1 x Manual