description:    No.: V4 Frequency: 2.4G Channel: 4ch Gyro: 6 A XIS Quadcopter battery: 3.7V 1600mAh lithium battery (included) Transmitter battery: 3 x 1.5 AA battery (not included) Charging time: 60-70mins Flight time: 16-20 minutes Drone weight: 94.8g (with battery) Remote control distance: 80-100m Colour: Black Camera: 720P/1080P/4K 1080P HD Dual camera/4K HD Dual camera Quadrilateral size: 27.5*25*5cm (arm is not folded) 12*7.7*5.5cm (folded with arms)          feature:    - With a foldable arm, it is small and easy to carry. - Has a high hold mode function to provide stable flight. - With wifi function, you can connect to APP, APK system to take photos, video, and transfer images in real time through mobile phone camera. - With track flight mode. You can choose the route you need. - With gestures to take photos. mv music editing features. - There are 3 cameras to choose from. Equipped with a 720P/1080P/4K wide-angle camera for a wide range of high-definition pictures and videos. - No head mode, no need to adjust the aircraft position before flight. - Anti-interference uses 2.4GHz technology. - 4 channels that can be raised, lowered, forwarded, retreated, left-handed, right-handed and 360° rolled. - Six-axis gyroscope for more stable flight and easy control. - The four-rotor body is made of high-strength and engineering-resistant plastic, lightweight and durable.          Function:    up/down, forward/backward, left/right turn, side flight, three-level flight speed, LED light, headless mode, one-button automatic return, altitude hold mode, WiFi FPV          Package Included:    1 x V4 RC quadcopter 1 x transmitter 1 x 3.7V 1600mAh lithium battery 1 x USB charging cable 4 protective covers 4 spare blades 1 screwdriver 1 x user manual           Common Problem and The Solution:    Q: What if it does not fly balance ? A: When the V4 is offset during flight, you can click on the Fine-tune button of reverse direction until the problem is solved. Q: What if the drone can’t take off ? A: Check the propeller to make sure it was installed correctly(diagonal propellers must be the same direction ) Q: What if the motor not spin? A: Check the motor to see if anything stuck the motor(hair, string, etc).If not ,we can resend a new motor for you. Q:How many battery of this drone? A:It depends on the version you choose.If you choose the version like 3batteries,it includes 2 batteries sperately and one battery in the drone. If this didn't solve your problem ,please contact us on time. We can solve it.