Description:USB mini VacuumFeature:USB power supply.tuo attachments.Professional clear Laptop keyboard.Item size:18*3.6*4.7(L*W*H)CMProfessional cleaner for laptop keyboards, top-grade cellphones and other keyboards, more clear and downrightInset LED, allows customers" to clean, focus on area to vacuumTwo power settings, can adjust according to situationUSB input, no added power neededTechnical data: Voltage: 5V DC/USBOperating temperature: -10 to 70°COperating humidity: 85% RHStorage temperature: -10 to 80°CStorage humidity: 95% RH