Item Type: Electric Air Duster Material: Aluminum Alloy Weight: Approx. 330g116oz/. Built In Battery: Battery 4000mah Included() Rotational Speed (, Mins): Highest Grade 11000010±%, Lowest Grade 2250010±% Control: Key, Slide Package List 1 x User Manual 1 x Host 6 x Nozzles 1 x USB Cable Note: Attention please avoid not charging for a time, otherwise it will cause battery to be over discharged and cant' be charged properly.