SZJJX HD Quadcopter Drone with 720P WiFi FPV Camera Altitude Hold RC Quadcopter 0.145kg=0.32lb net weight with battery.Include Extra 4pcs 800 mAh(real 650mAh) Battery(each $9,2 color silver or blue) and 6 in 1 Seat Charger(this one easy broken ask us send new if broken , The RC Drone contine flying even your turn off the Transmitter, So please Make the Drone not work before you turn off the Transmitter.this can protect drone not fly without control Beautiful Cam, Air Pressure Sensor Altitude Lock, Easy Control Headless Mode, Return Home Key, 6 Axis Gyroscoper,High hold mode: With high density air pressure sensor which can precisely hold the height. when you hold the height, you can release the Left trigger ,it will fly one height.Detail see our youtube 720P FPV Real-time HD camera: Capture and record every beautiful and unforgettable moment.detail can see video sample taken by the camera. youtube video Can ask send free spare part within 2 month if any problem. Correcting Flying level and Emergency Stop way see Image 2,4,5