HUBSAN X4 Quadcopter with FPV Camera Toy Control distance: 50 - 100meters, Live video distance: around 100 meters Latest 6-axis flight control system with adjustable gyro sensitivity Lightweight airframe with nice durability Instant video preview on transmitter Battery: 3.7V Voltage, 380mAh li-po battery with auto cut off safety PCB 6 Axis Gyro Stabilization ,Immersive FPV Flight Record Flight Video to SD Card The quad copter comes with installed 3.7V 380mAh lipo battery but the battery for transmitter is not included (4pcs AA) which is sold separately kindly refer to the attached PDF file, troubleshooting page 23rd.