Amazon has released a new video showing the prototype of its unmanned drones to be used for delivering packages to customers within 30 minutes or less.

In a bid to have a smooth and quick delivery system, Amazon announced the technology two years ago.

In the video, Amazon said the drones weigh 55lb and are capable of carrying shipments of up to 5lb. While delivering packages to their destinations, the drones will use ‘sense and avoid’ technology to negotiate any possible hindrance.

The drones take off vertically similar to a helicopter. After achieving a height of nearly 400ft, they start flying horizontally.

"While delivering packages to their destinations, the drones will use ‘sense and avoid’ technology to negotiate any possible hindrance."

Amazon mentioned it was conducting test flights of the drone in several international locations. The company is also said to be exploring various vehicle designs and delivery mechanisms to find out the best method of delivering packages in different environmental situations.

Prime Air, the name of the drone delivery service by Amazon, will have to wait for regulatory approval before commencing its service.

Amazon received approval to fly drones for research from the Federal Aviation Administration (FAA) two years ago.

Other companies including Walmart and Google expressed their intention to explore the method of using drones to deliver packages.

Walmart recently applied for permission from the FAA to begin drone testing. Google also revealed it wanted to start a drone delivery service in 2017.