(1) Diameter of main Aixs of revolution:14.5cm; (2). Weight:24g; (3). Size:19.2cm*4.5cm*10.4cm(L*W*H)(4). Model of motor:180*2 ;(5). Transmitter:Standard 2-channel infrared ray(6). Battery::3.7V 100mAh (Polymer Lithium Lon Battery)