DESCRIPTION: Quiet sleeve-bearing design Ultra quiet MID speed brushless DC Blower Blade Material is thermoplastic UL94V-0 PBT Housing Material is thermoplastic UL PBT Operating Temperature: -10 Celsius degree to +60 Celsius degree Life Expectancy at 40 Celsius degree: 40000 hours Rating: DC 5V / 0.1-0.3A Color: Black Size: Approx. 50 x 15mm (D*H) INCLUDED: 5 x Blower