holy stone hs190 foldable mini nano rc drone for kids gift portable pocket quadcopter with altitude hold 3d flips and headless mode easy to fly for beginners holy stone main features: altitude hold function: when you release the throttle stick, the drone stays hovering at the current height. one button take off/landing: once the drone is communicated to the remote control, simply press the "one button take-off/landing" button, the drone will take off automatically; press the button again, it will slowly land to ground 3 speed adjustment: 4 speed modes from low to high suitable for both beginner and expert. easy to charge: integrated with a usb power charger port on the drone for you to charge the battery without taking it out. lighting system: equipped with led navigation lights and remote control indicator light for night flight. specification: quadcopter weight: 24.9g (faa registration not required) drone dimensions: 4.5 x 4.5 x 1.2 inches(with propeller guards) charging time: about 40 mins playing time: 5-7 mins transmitter operation range: about 30-50 meters automatic altitude hold: hover / barometer set height function, after using the left joystick (accelerator) to control the ascending / descending flight of the aircraft. free up the left joystick (accelerator) and the aircraft will still hover at that height at which the joystick is freed. built-in 6 axis gyro helps to hold the attitude and position of fuselage which making the video shooting and photograph more stability. foldable and easy to carry: this mini quadcopter can be folded into the controller, which is small and easy to carry. headless mode: usually, the forward direction of a flying multi-rotor is the same as the nose direction. in headless mode, the forward direction has nothing to do with nose direction, the direction will be the same as your transmitter. one key return home function: with the press of a button (return to home) in headless mode, the drone would be able to fly back to the direction of the transmitter.