Features:1.Small noise ,less than 70dB?It will not produce unpleasant noise2.Cordless design, more convenient to use3.USB Rechargeable vacuum cleaner, use more long-term;can work up to 60 minutes continuous after full charged4.Especially good for cleaning keyboard, car, sofa, pet house and so on 5.Compact size, elegant in shape, easy to be carried anywhere!Specification:Size:6 x 6x2.5 inch Weight:230G Material: ABSOutput Voltage: DC 5V5Noise:less than 70dBCharging voltage:DC 5VCharing current:1000mARated power:8WLithium battery:2100mAhTips and Notice:1.The suction will get weak when the electricity is insufficient2.Remove the front filter screen installed to turn off the vacuum clean power3.Clean the filter at least once a month,it has to be cleand evident sediments on the filter at once.4.The operation must be placed under vacuum cleaner filter condition.5.Check before re-use filter is installed or damaged.6.Avoid rain,near the hot objects,direct sunlight.7.Do not touch any liquid.8.Prohibition inhalation sharp objects,hot objects,such as glass,carbon and so on fire.9.The non-professionals forbidden to open repair or modify the internal wiring.Charging Questions:1.Light goes out when fully charged2.About 3 hours for a full charge3.Machine automatically stops charging when fully chargedPackage included:1 x Cordless Mini Vacuum Cleaner (built-in Li-battery)1 x Brush Nozzle 1 x USB Charge Cable1 x instructions manual1 x Flat Suction Nozzle 1 x Sponge Filter