(1). Diameter of main Aixs of revolution:12.5m; (2). Weight:20.9g; (3). Size:17cm*3cm*8.5cm; (L*W*H)(4). Model of motor:180*2 ;(5). Transmitter:Standard 3-channel infrared ray(6). Battery:3.7V 65mAh (Polymer Lithium Lon Battery)