Precautions:       1. Do not charge the battery when you are away from home, do not charge the battery immediately after flying, do not over-discharge the battery (over-discharge may cause the battery to be uncharged and become useless). After the battery is fully charged, cut off the power in time and cannot charge for a long time. .       2. Do not modify any parameters and wiring without knowing the flight control and remote control. (It’s very important, we won’t compensate if it’s man-made damage )       3. Turn on the remote control before powering on the aircraft, unplug the power switch after the flight, and then turn off the remote control to prevent accidents.       4. This product is not a toy and is not suitable for children under 14 years of age.       5. If you are a beginner, it is recommended to be assisted by an experienced adult.       6. Novices should pay attention: Do not use your hands to hold the plane when it is turning, or let children touch it. Prevent being scratched.       7. When the plane falls or hits other objects at high altitude during flight, please turn off the start switch in time, otherwise it may cause damage to the flight control and motor. Check if the aircraft is not damaged and the screws are not loosened, and everything is normal, you can take off again.            Functions and features:      215mm wheelbase       Built-in OSD Betaflight       Support BLHeliSuit configuration       Support voltage 3-4S       7-10 minutes of battery life       The remote control distance (with FLYSKY remote control) is about 400 meters, (with T-PRO remote control) is about 2000 meters   .            Propeller:      Model: 5043       Pitch: 4.3 inches       Material: PC       Weight/G: 4.63G       Inner diameter of center hole: 5mm       Paddle diameter: 13.5mm       Center thickness: 7mm            ESC:      Working voltage: 2-6S       Maximum continuous working current: 45A       Maximum instantaneous working current: 50A       Support communication modes: DShot150/300/600, PWM, Oneshot125, Oneshot42 and Multshot       Firmware version: BL16.7       Installation hole distance: 20 * 20mm / 30.5 * 30.5mm       Product size: 44 * 44 * 5.5       Packing size in mm: 62 * 58 * 18 mm       Product net weight: 13.