Professional drone with 4k camera

Buy offer Details

Dear Sir/Madam,
Im looking for products with the following specifications :
- 4k Camera
- 20 minutes or higher flight time
- Capable of operating in -10 Celsius
- Flight radius or range of 5 kilometers or greater
- Capable of following a pre-programed flight using GPS
- Capable of being operated from a phone or tablet
- Dimensions are not important, we operate using large trucks
- Charging times are not important, provided it can be completed overnight
- Must be able to charge from Canadian/American Power outlets (two prong or 3 prong plug)
We are a large forestry company in Canada looking to being a trial run on using drones for harvest monitoring. This will be the first drone in the program, but if the program goes well we are looking to buy about 20-100 pieces.