Crafted from aluminum alloy with a frosted gray metallic finish, offering high hardness and a sophisticated look. The aluminum alloy material promotes efficient heat dissipation, preventing rust. The hollow design maximizes heat dissipation with top-reserved vents, and the case includes a fan for rapid cooling, effectively protecting the motherboard. Exterior Parameters: Name: Sunrise X3 fraction aluminum alloy shell Size: 90 X 60 X 33mm Fan Parameters: Fan size: 40x40x10mm Wire length: 8cm Rated speed: 4800rpmand10 percent Rated voltage: DC 5V Lifespan: 25C, 20000 hours Voltage: 4V Polarity protection: the circuit will not burn when VCC or GND is reversed Color: Material: Aluminum alloy Package Contents: 1 x Aluminum Alloy Case 1 x Cooling Fan 1 x Antenna Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is 1-3 cm.