The specifications are still a secret, Russia is ready to test the S-500 air defense system

Russia’s S-500 missile
Moscow, - Russia is ready to carry out initial testing of the Prometey S-500 air defense system. Although the technical specifications have not been released officially or are still kept secret, it is said the system is capable of destroying air targets at a distance of 600 km.

Preliminary test (S-500 preliminary test) will be carried out in 2020. S-500 will then be submitted to the Russian Armed Forces in 2025. As stated by Russian Deputy Minister of Defense Alexei Krivoruchko.

"Next year, it is planned to start testing the initial stages of the S-500 anti-aircraft missile system, the production of the first model to be delivered in 2025," Krivoruchko said as reported by Sputniknews, Saturday, December 28.
Russia’s S-500 missile
S-500 Prometey (Prometheus) or 55R6M Triumfator-M was designed by Almaz-Antey as a complement to the S-400 Triumf system that has been owned by Russia and imported by several buyer countries such as China and Turkey.

Unlike the S-400 which has been sold to other countries, for now the S-500 will only be used by Russia. This was said by CEO Rostec Sergei Chemezov some time ago.

A number of large device systems support the Prometey S-500 system. Among these were the 77P6 launch vehicle that was carried by a BAZ-69096 10X10 truck, 55K6MA and 85Zh-6 Command Post on a BAZ-69092-16 6X6 truck, and 91N6A (M) battle management radar on a BAZ-6403.01 8X8 truck.
Russia’s S-500 missile
Then there is the 96L6-TsP acquisition radar on the BAZ-69096 10 × 10 truck, 76T6 multimode locking radar on the BAZ-6909-022 8X8 truck, and ABM 77T6 locking radar on the BAZ-69096 10X10 truck.