When you’re out flying a drone, you don’t want to be colliding with a building, a tree, or something worse. Obstacle avoidance is a must but not all drones have it. That is, unless you’re talking about one of the best all-rounders on the market. The DJI Mini 4 Pro with RC 2 Remote is on sale at Walmart for $1,149 (was $1,299).Parting company with this amount of money is no small choice but the decision is made a
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