MODEL NO YN-1200 WITH A/C ADAPTER PRODUCT HIGHLIGHTS Adopts 1200 high-quality LED lamp beads with chips of extra-large luminous area. Greater luminous intensity, more uniform facular and longer service life at the same energy consumption. Adopts Yongnuo proprietary LED driving technology which does great help to effectively avoid corrugation and stroboscopic flash. Use 2 encoders digital dimming system, including coarse tuning mode and fine tuning mode. Intuitional parameter of the power output on the LED digital display screen. Supports external DC power input for long time shooting. Fan forced heat dissipation solves the heating problem after long use. Comes with 2 temperature filters, so the LED can be used under different circumstances.   WARRANTY 1 YEAR