The Phottix Ares II flash trigger system boasts the latest technology and is perfect for of-camera manual shooting with studio lights or hot shoe flashes. The Ares II features 16 channels in 4 groups; can trigger lights up to 150m apart; uses a universal hot shoe; incorporates an LCD display on both the transmitter and receiver; has a 3.5mm sync port on the receiver, digital ID codes, and is compatible with other Phottix products.Phottix Ares II Transmitter Only – Receiver Sold Seperately