Features: 1. The Fresnel lens design has a better focusing effect to make sure that the light is evenly distributed after it is emitted, and there is no difference in the brightness of the four corners. 2. The TR-950 flash comes with a light-controlled receiver, which can receive the main light source to trigger the flash at any time, and easily realize the light-controlled flash. 3. 2.9 second overspeed return system. Equipped with shutter synchronization function, power saving function and over-heat protection function. 4. 3 flash modes switch freely, M/ Multi/ S1/ S2 mode is flexible to choose. 5. Flash head can be up 90 degrees, down -7 degrees, horizontal right and left rotation 180 degrees, the flash head to the ceiling or wall, so that the picture is more natural, the shadow is lighter. Specification: Brand: TRIOPO Condition: 100% Brand New Material: Plastic Model: TR-950 Line design: IGBT Flash index: 38 (ISO 100, 35mm) Flash coverage: fixed focus, flash head rotation (reflection flash) Flash mode: manual mode M, light flash mode S1, light flash mode S2, strobe mode Multi Wireless Trigger: Wireless S1/ S2 light induction flash Wireless flash distance: indoor 20-30 meters, outdoor 10-15 meters On-line rotation angle: -7 ~ 90 degrees Left and right rotation angle: 0 ~ 180 degrees Color temperature: 5500K Flash time: 1/200 seconds-1/20000 seconds Flash control: 1/128-1/1 step 0.3 EV, a total of 22 micro-shift position External interface: hot boots, PC synchronous jack, external power jack Return time: 2.9 seconds Power supply: 4 x alkaline batteries or Ni-MH batteries (not included) Luminescence times: 100-1500 Additional functions: PC synchronization, power saving mode, overheating protection Package Size: Approx. 10.3 x 8 x 23.5cm / 4.1 x 3.1 x 9.3inch Weight: Approx. 493.7g Package List: 1 x Flash Light 1 x Bag 1 x Base 1 x User Manual 1 x Soft Box .