TRIOPO G4 2.4G Wireless Flash Speedlite Trigger with Hot Shoe (Black) Features 1. Built-in 2.4G wireless G system can be used as the master or slave unit of the wireless multi-lamp flash system, making shooting simple and fast. 2. Stable signal, sensitive reflection, convenient for photographers to flexibly illuminate. 3. When using high-speed shutter with flash to create portraits, the sun can be dimmed, highlighting the details of people is backlight, and ordinary flash triggers cannot pay for high-speed shutter synchronization flash. 4. Exposure compensation: In a complex light environment, the camera is metering will inevitably have errors. 5. Group synchronous flashing: 16 channels grouping control and triggering, flexible lighting Specifications 1. Operating frequency: 2.4GHz 2. Remote control range: More than 100 meters 3. Channels: 16 4. Trigger power supply: 23A 12V alkaline battery (not included) 5. Size: 65 x 40 x 30mm 6. Net weight: 40g