Flashpoint XPLOR 600 HSS TTL Battery-Powered Monolight with Built-in R2 2.4GHz Radio Remote System and R2 Transmitter for Nikon (Bowens Mount)(AD600) Flashpoint XPLOR600 TTL 600ws Monolight - Flashpoint R2 i-TTL Transmitter for Nikon - 600ws Flashtube with Protective Cover - Standard 7" Reflector - Rechargeable Lithium Battery - AC Battery Charger Set - Compartment Case - Flashpoint 2-Year Full USA Warranty 600Ws studio quality light without wire Guide Number 183 (ft) / 61 (m) ISO 100, with standard reflecto Built-in 2.4G R2 Radio Remote System Compatible wireless TTL system: Fully supports the Canon E-TTL II, Nikon i-TTL and additional TTL systems in Flashpoint R2 remote system. Integrated professional 11.1V/8700mAh lithium battery pack