Russian modernization of the T-80BV tank, developed by Omsktransmash. The modernization includes the installation of the Sosna-U multi-channel gunner sight, which includes sighting, thermal imaging, rangefinder channels, as well as a missile control channel. The tank is equipped with a 125 mm 2A46M-4 cannon, a modified GTD-1250 gas turbine engine, a 2E58 weapon stabilizer and a TVN-5 driver's observation device. Improving the command controllability of the T-80BV tank is provided by the installation of an ultra-shortwave radio station R-168-25U-2 Aqueduct and measures have been introduced to reduce fuel consumption. The loading mechanism has been modified to accommodate the BPS S-1 and S-2. To protect against enemy fire, the vehicle is equipped with anti-cumulative lattice screens and the Relikt modular dynamic protection system. Since 2018, it is planned to install the Arena-M active protection complex. Combat weight 46 t