#1 How high does it fly ?
99 feet. But the risk at this altitude with this particular drone is pretty high. I've lost connection multiple times with the Tello, especially anywhere near power lines, which seems obvious, but when you lose connection, and it winds up near power lines by accident, you may have serious issues getting it down, or even better, witnessing it spin down in circles while you hope it doesn't wind up in the road. Anyway, about 100 foot is max, but be VERY well clear of any obstacle and be sure it's less than 5mph winds