• Compatibility: Nikon D90， D5000
• Wireless synchronization trigger to studio flash units
• Wireless synchronization trigger to the flash on the top
• Wireless synchronization trigger to the camera shutter (including ordinary shutter， long exposure and delay shutter)
• Transmitting Frequency: 433MHz
• Channels: 16
• Sync. Speed: 1/200 seconds
• Trigger Argument Flash Distance: Less than 30 meters
• Shutter Remote Control Distance: More than 100 meters
• Transmitter Battery: 23AE 12V
• Receiver Battery: 2 ☆ 1.5V AAA batteries