BRT-90, also known as the Combat Vehicle 90 (CV90), is a tracked infantry fighting vehicle (IFV) developed by BAE Systems Hägglunds, a Swedish defense company. Here are some key features and specifications of the BRT-90/CV90:

1. Armament: The BRT-90/CV90 is equipped with a fully stabilized turret that can be armed with various weapon systems, including a 30mm autocannon, anti-tank missiles, machine guns, and a coaxial machine gun. The specific armament can vary depending on the variant and customer requirements.
2. Protection: The vehicle features advanced armor protection, including modular composite armor, which provides enhanced ballistic and mine protection. The hull design incorporates sloped surfaces, reducing its vulnerability to direct hits. The BRT-90/CV90 also has a fire suppression system and NBC (nuclear, biological, and chemical) protection for the crew.
3. Mobility: The BRT-90/CV90 is a tracked vehicle, offering good mobility across various terrains. It is powered by a diesel engine, providing a high power-to-weight ratio. The vehicle features a hydropneumatic suspension system that allows for adjustable ride height, providing improved off-road performance and increased stability during firing.
4. Crew and Troop Capacity: The BRT-90/CV90 can accommodate a crew of three (commander, gunner, and driver) in the front of the vehicle. It can also carry up to eight fully equipped infantry soldiers in the rear compartment, allowing for the transport and deployment of an infantry squad.
5. Sensors and Electronics: The BRT-90/CV90 is equipped with advanced sensors and electronics to enhance situational awareness and combat effectiveness. It includes day/night vision systems, thermal imaging, laser rangefinders, and battlefield management systems, enabling effective target engagement and coordination with other units.
6. Variants: The BRT-90/CV90 has several variants tailored for different roles and mission requirements. These include command vehicles, recovery vehicles, ambulance vehicles, mortar carriers, and anti-aircraft missile systems, among others. The modular design allows for flexibility and adaptability to various operational needs.

The BRT-90/CV90 is highly regarded for its versatility, mobility, and firepower. It has been widely exported and is in service with several countries, including Sweden, Norway, Finland, Denmark, Switzerland, and the Netherlands. The vehicle continues to undergo upgrades and improvements to meet evolving battlefield requirements.