Features1. GN58, 180mm, ISO 100, supports multiple flash modes: TTL/ M/ MULT/ S1 / S2 / Master/ Slave. Highly sensitive sensor supports far wireless triggering distance. 2. 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. 3. 2.4G wireless master control and slave, there is no directionality, and it can be used to trigger and flash off the machine. 4. Suitable for canon camera wireless flash system, realize machine TTL, manual and frequency flash. 0.1-3s recycle time, supports high speed continuous shooting. 5. The rotatable LCD screen is clear for displaying multiple readings, the buttons and knob can help you to adjust various settings quickly and easily. 6. Using strobe, a series of flashes can be used to move multiple images of an object over a photograph.Specifications1. Material: Plastic 2. Flash Index: GN58 (180mm, ISO100) 3. TTL Mode: Compatible for Canon E-TTL 4. Flash Mode: TTL/ M/ MULT/ S1 / S2 / MASTER/ SLAVE 5. Zoom Mode: Auto zoom, manual zoom 6. Synchronization Mode: Front curtain synchronization, rear curtain synchronization, high-speed synchronization 7. Frequency Flash: Supports 1-199Hz 8. Flash Time: 1/200s-1/20000s 9. Color Temperature: 5600 K +/- 100 K 10. Call Back Time: 0.1-3s (power output 1/128-1/1) 11. Wireless Flash: Built-in 2.4G, MASTER mode, SLAVE mode, S1, S2 12. Manual Flash: 8-level light control (1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128) 13. Flash Times: About 150-1500 times (different according to the battery, flash output 1/1-1/128, using 2800mAh battery) 14. Adjustable Angle: Tilting angle: -70 degree-90 degree; Panning angle: 0-360 degree 15. Focal Length Range: 18-180mm 16. Power Supply: 4 x AA alkaline batteries (Batteries not included) 17. Size: Approx. 7.5x6x20.5cm 18. Weight: 400gSpecification: Package Weight One Package Weight 1.03kgs / 2.27lb One Package Size 32cm * 12cm * 12cm / 12.6inch * 4.72inch * 4.72inch Qty per Carton 20 Carton Weight 21.00kgs / 46.30lb Carton Size 52cm * 42cm * 32cm / 20.47inch * 16.54inch * 12.6inch Loading Container 20GP: 381 cartons * 20 pcs = 7620 pcs40HQ: 885 cartons * 20 pcs = 17700 pcs