Features:
1. Built-in Circuit Support Two Trigger Methods:
     Optial Trigger
     Radio Trigger (By Sync Cord)

2. Intelligent sensor can be set to ignore pre-flash pulse emitted by TTL speedlite,
    Such as those from Canon (E-TTL) and Nikon(iTTL).
    This ensures the mounted speedlite will fire only in response to the main burst from the remote master flash.

3. Four Flash Mode for Choice:
    Cease Fire
    Immediate Fire
    Ignore single pre-flash pulse
    Ignore two pre-flash pulse

4. Tilt Locking Knob make photographers to adjust light source quickly and freely.

5. Offer 1pcs free battery (CR2032) with this gadget.