• Channel: 4
• Working distance: Up to 30M
• High-speed and synchronous for 1/200 second.
• The receiver has an on/off switch， and an LED to indicate triggering.
• Radio working frequency: 433MHz
• Power: 1.5*2 AAA batteries (not included)
• Adapter Size for Receiver Plug: 3.5mm --> 6.35mm
• PC sync cable included.