Micro drones are between 250 grams and 2 kilograms:
#Micro drones
Micro drones
These need registering, so therefore a foreigner will not be able to fly them. What you stated is for commercial purposes only. If you do want to fly commercially you will have to do some research before you travel, contacting an Indian entity and asking them to register it for you. This can be quite a hassle so I wouldn't do this unless it was really important.