Flashpoint R2 E-TTL Transmitter for Canon Cameras (X1T-C) Flashpoint R2 ETTL Transmitter for Canon - Instruction Manual - Flashpoint 1-Year USA Warranty Flashpoint R2 2.4GHz Radio System unifies and simplifies Great transmission range beyond 330 ft / 100m Traditional Flash Modes ETTL / M / OFF High Speed Sync to 1/8000th