Gtech Pro Handheld Vaccum Cleaner (Grey/Green/Black) Designed for busy homes, the new gtech pro, combines the convenience of cordless cleaning with hygienic bags for easy disposal, reducing maintenance time and helping to keep your bin, and the surrounding areas clean and dust free. With a dust capacity of 1. 5 liters, the gtech pro's breathable bags hold more than 3 times the dirt compared to the most cordless vacuum cleaners of a similar size. Each bag can last upto 1-3 months in an average home before needing to be changed. Designed for maximum particle intake, the bags have three layers to effectively contain dust and debris from around your home.