The Phottix Strato TTL Flash Trigger for Canon provides an easy-to-use and affordable TTL radio flash triggering solution to photographers. The 4-channel, 2.4 GHz transmitter and receiver set supports high-speed and second-curtain sync, boasts a 100m working range and features a backlit display and quick-change buttons for adjustments. An USB port enables users to upgrade the device's firmware. Importantly, the Strato TTL transmitters and receivers use AA batteries, just like hot shoe flashes - carrying different sized batteries is no longer a concern. Pricing to be confirmed.