Product Dimensions:1 x 1 x 1 cm; 220 Grams Are Batteries Included:No Item Weight:220 g Guaranteed software updates until:unknown Package list: 1 x Set of Wood Cutting Parts 1 x Pack of Screws 4 x sg90 Servo Features: and . 4 degrees of freedom robot arm with more untrammeled and flexible experience. Each joint of the mechanical arm is driven by a sg90 servo. Adopt wood material, with light weight. Ideal robot arm DIY assembly kit for college students, middle school students, DIY enthusiasts, etc. Specification: Model: SNAM1500 Weight: Approx. 222g/7.8oz Note: 1. This product does not include the circuit board. 2. Customers need to assemble the robot arm by themselves. Adopt wood material, with light weight. 4 degrees of freedom robot arm with more untrammeled and flexible experience. and . Each joint of the mechanical arm is driven by a sg90 servo. Ideal robot arm DIY assembly kit for college students, middle school students, DIY enthusiasts, etc. See more product details Adopt wood material, with light weight. 4 degrees of freedom robot arm with more untrammeled and flexible experience. and . Each joint of the mechanical arm is driven by a sg90 servo. Ideal robot arm DIY assembly kit for college students, middle school students, DIY enthusiasts, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia