Here is reality Mini 3D Helicopter Features: 1) Product size:33*25*11 cm 2) 8*1.2V batteries for transmitter(not included) 3) 3.7V,350mAh rechargeable battery for helicopter 4) The transmitter used as charger 5) Charge time:25 minutes 6) Flying time:3 minutes 7) Functions: ascent, descent, forward, backward and left/right turn 8) Remote control range:30 m 9) Frequency: 27/49Mhz 10) Packed with window box. from website: http://www.sunnykids.cn