Automatically adjusts fan speed based on notebook temperature, ensuring optimal cooling efficiency. Fan runs at high speed when temperature exceeds 40 degrees and stops below 40 degrees. Each radiator includes 3 air guide covers to fit various notebook air outlets, ensuring compatibility with different laptop models for efficient heat dissipation. Enjoy precise control with an infinitely variable speed knob, offering customization unmatched by standard speed settings for personalized cooling. Features a durable high-power cooling fan designed for long-term effective operation without being affected by dust intake. Offers ultra-quiet performance with high wind force for enhanced cooling. Crafted with precision using low-carbon, environmentally friendly materials. Boasts high-density construction and high-strength anti-skid pads for secure placement and stability on any surface. Item Name: Laptop Cooler Material: Plastic Fan Speed: 1500-300010 Percent RPM Product Air Volume: 75.35CFM Rated Voltage: 5V Rated Current: 0.3510 Percent A Input Power: 1.75W Features: Strong Airflow, Practical, Low Noise Size Details: 17.5cm x 8.6cm x 5.2cm/6.89" x 3.39" x 2.05" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Color Black: 1 x Laptop Cooler 1 x Data Cable 1 x Instruction Manual 3 x Air Guide Sleeves 1 x Glue 1 x Anti-slip Mat Or Color Black1: 1 x Laptop Cooler 1 x Data Cable 1 x Instruction Manual 3 x Air Guide Sleeves 1 x Glue 1 x Anti-slip Mat 1 x Silencer Tube