
The ads claimed they would increase the battery life and speed of my Mavic Air 2, didn't increase the battery life and actually increased my speed by 2km/h compared to DJI factory props decrease, my DJI props were up to 42.6 mph and the master crew props were 41.4. This test was done a few times in calm conditions at 200 feet and they were louder than the stock DJI propellers.