This slim and portable cooler can reduce heat of your laptop so effectively that it can prolong the lifespan of your laptop. The 2 cooling fans can keep your laptop from overheating. With the four folding arms, it can adjust to fit your computer's size, reliable and convenient to carry. Features: Remarkable Cooling Performance 2 powerful fans keep your laptop from overheating, cooling down the temperature of your system. Compact and Lightweight Design Portable compact and lightweight design which is perfect for travelers and commuters. Adjustable and Foldable Arms Foldable four arms can be adjusted to fit your computer's size, which is convenient to carry. Low noise High performance and rather silent, give you a quiet working environment. Specifications: Color: black Number of fans: 2 Port: USB 2.0 Fan airflow: 28CFM Fan speed: 2100rpm Power voltage: DC 5V Power current: 150mA Fan size: 6.6 * 6.6cm / 2.60 * 2.60in Item size: 19 * 8.7 * 1.5cm / 7.48 * 3.42 * 0.59in (L * W * H) Item weight: 78.4g / 2.76oz Package size: 20 * 9.5 * 4cm / 7.87 * 3.74 * 1.57in (L * W * H) Package weight: 104g / 3.67oz Package list: 1 * laptop cooler Note: The package list without user manual