Features: GN 58, 180mm, ISO 100, supports multiple flash modes: TTL/ M/ MULT/ S1 / S2 / Master/ Slave. Highly sensitive sensor supports far wireless triggering distance. Multi-contact hot shoe. With high-speed synchronization function, it supports 1/8000s trigger on camera and off camera. In high speed sync mode, using aperture priority for filling light for the shot subject, make your shooting more comfortable. 2.4G wireless master control and slave, there is no directionality, and it can be used to trigger and flash off the machine. Suitable for Canon camera wireless flash system, realize machine TTL, manual and frequency flash. 0.1-3s recycle time, supports high speed continuous shooting. The rotatable LCD screen is clear for displaying multiple readings, the buttons and knob can help you to adjust various settings quickly and easily. Using strobe, a series of flashes can be used to move multiple images of an object over a photograph. Specification: Model: TR-982III/C Product Name: Flash Material: Plastic Color: Black Flash Index: GN58 (180mm, ISO100) TTL Mode: Compatible for Canon E-TTL Flash Mode: TTL/ M/ MULT/ S1 / S2 / MASTER/ SLAVE Zoom Mode: Auto zoom, manual zoom Synchronization Mode: Front curtain synchronization, rear curtain synchronization, high-speed synchronization Frequency Flash: Supports 1-199Hz Flash Time: 1/200s-1/20000s Color Temperature: 5600 K + 100 K Call Back Time: 0.1-3s (power output 1/128-1/1) Wireless Flash: Built-in 2.4G, MASTER mode, SLAVE mode, S1, S2 Manual Flash: 8-level light control (1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128) Flash Times: About 150-1500 times (different according to the battery, flash output 1/1-1/128, using 2800mAh battery) Adjustable Angle: Tilting angle: -7°-90°; Panning angle: 0-360° Focal Length Range: 18-180 Power Supply: 4 x AA alkaline batteries (Batteries not included) Size: Approx. 8x6x20 cm/ 3.15x2.36x7.87 inch Packing List: 1 x Flash Light 1 x Protective Bag 1 x Mini Stand 1 x User Manual 1 x Soft Diffuser