Specifications
The NC190 cooler is made for laptops up to 15.6 inches. 
Fan setup: It has 5 fans total — one large 125 mm fan in the centre, plus four smaller 60 mm fans (two on each side). 
Fan speeds: The large 125 mm fan spins at around 1000‑1200 RPM, while the smaller ones spin faster (approx. 2400‑3200 RPM in some listings). 
Height / angle adjustment: There are 5 adjustable height settings so you can tilt the laptop for better comfort. 
Other comfort / safety features: It has a mobile phone holder (flip‑out), silicon / rubber pads to prevent slipping, and a metal mesh top for better airflow. 
Connectivity / power: It uses 2 USB ports — one to power the cooler (from your laptop / USB source), another for peripheral or extra device connection. 
Warranty
Warranty period: 1 year from date of purchase. 
What is covered: manufacturing defects. 
What is not covered: unauthorized tampering, damage from moisture / water, damage due to heat/humidity or mishandling/physical damage.