Air Umbrella-C
Air umbrella-c is scalable.It is about 50 centimeters after shortened and 80 centimeters after extended.The umbrella weights about 850 grams.The battery life is about 30 minutes.
Air Umbrella-B is the basic style. The umbrella is 50 centimeters in length and 800 grams in weight.The battery life is about 30 minutes.
Design drawing of Air Umbrella-B