It is a good choice to take Davek Alert Umbrella if you often lost your umbrella in some place, whose proximity sensor chip can help you to get out of such trouble through the connection between you mobile operation system (compatible iOS or Android) with Bluetooth 4.0.
The umbrella will be automatically actuated when it is taken over 60 seconds and a notification will be sent to your mobile phone if you leave it more than 10 meters. An alarm sounds unless you hold it or you can select to turn off the alarm function manually. As for the energy supply, one battery can afford one to two years.
Actually, this windproof umbrella is outstanding for strong structures and materials for wind resistance such as Zine-alloy handle, pure steel umbrella rod in deoxidation, aluminum skeleton and 190-line glass fiber, capable of bearing massive opening and closing for a thousand times.
More interestingly, this wind resistance umbrella is provided with the built-in weather forecasting system so that you can decide whether you need to take an umbrella.
By far, the bottom price is 79 USD, blue and black is available.