Manual for MJX X400 Drone. View and download the pdf, find answers to frequently asked questions and read feedback from users. Title. File Size. Download Link. MJX X101 User Manual.pdf. 18.9Mb. Download. MJX X102H User Manual.pdf. 2.5Mb. Download. MJX X300C User Manual.pdf.DBPOWER MJX X400W FPV Drone with Wifi Camera Live Video Headless Mode 2.4GHz 4 Chanel 6 Axis Gyro… by njx The DBPOWER X400W is one of the cheapest drones in 2019, with features that will certainly amaze you. Thousands of people have given him a positive rating INSTRUCTION MANUAL. Technical parameter of the model. Fuselage Length:298mm. Gross Weight: about 112g Motor: Coreless motor. Battery: Li-polymer 3.7V.