*Frequency:2.4 GHz
*Maximum synchronous speed:1/8000 sec
*Available flash mode:TTL,,Manual Flash
*Distance:100m+
*Camera's sync modes: rear-curtain sync,high-speed sync
*Controllable slave groups:3(A,B,and C)
*Channel:4 channels
*Output:support PC and hot shoe trigger
*Input:USB port(transmitter and receiver)
*Compatible flashes:On-camera flash,studio strobe and outdoor flash
*Focus lamp:Transmitter-supported focus lamp
*Input voltage:2.4V-3.2V
*Antenna:Built-in PCB antenna
*Operating temperature:-15-65°C
*Storage temperature:-30-85°C
*Size:15.5*8*9.5cm
*Weight:320g
*Power source: 2*AA batteries