✔ Good heat dissipation and long service life. ✔ It is with four cooling fans, more speed control ✔ Adjust the governor button to control the air volume. ✔ Long service life, more durable and quiet. ✔ Ergonomic design bring you comfortable handling. Features: Good heat dissipation and long service life. It is with four cooling fans, more speed control Adjust the governor button to control the air volume. Long service life, more durable and quiet. Ergonomic design bring you comfortable handling. Unique anti-slip design to ensure the safety of the laptop. Description: High performance and superior craftsmanship. The cooler pad is super stable and work efficiently. Low noise and super silent,will not disturb your daily life. Specifications: Color:black Product Size:40*27.5*3cm Package Size:42*29*3.2cm Model:S4 Fan size:14*14*1.5cm Rated voltage: USB5V DC Current:0.22A Fan noise:21Dba Speed: 1200 +/- 10%RPM Material:ABS and metal mesh Fit notebook size:10-17' Package included: 1x Laptop Cooler 1x Cable