YN900 is equipped with. Multi channel wireless remote controller. Which is used to adjust the luminous intensity and control the switch of YN900. A mobile APP is provided on YONGNUO official website. With this mobile APP, you can. Read the current parameter of the luminous intensity and channel, and control the luminous intensity and the switches of 8 groups of video lights individually. YN900 adopts 900 high quality LED lamp beads with chips of. In the same energy consumption, the luminous intensity is greater, the facular is more uniform and the service life is longer. YN900 adopts YONGNUO proprietary LED driving technology which does great help to effectively avoid corrugation and stroboscopic flash. YN900 adopts encoder digital dimming system, including coarse tuning mode and fine tuning mode. Screen of YN900, the parameter of the power output is intuitional. Shooting for long time is possible because YN900 supports external DC power input (power adapter is optional). The fan forced heat dissipation YN900 adopts solves the heating problem after the long use of LED video light. YN900, equipped with 2 pieces of color temperature filters, can be used under different circumstances. For Sony NP-F series. NP-F750 NP-F550 NP-F530 NP-F970 NP-F330 NP-F950 NP-F570 NP-F770 NP-F960 NP-F930 NP-F930/B NP-F970/B. Light Source: 900 LED beads. Remote Control Distance: >20m. Average Service Life: Approx. Power Supply: Two NP-F lithium batteries or external 19V or 5A DC power supply(not included). Item size: 10 x 7.3 x 2.0in / 25.5 x 18.5 x 5cm. Item weight: 2.04LB / 924g. Package size: 11.8 x 8.7 x 2.7in / 30 x 22 x 7cm. Package weight: 3.21LB / 1460g. 1 x YN900 Video light. 1 x Lamp holder. 1 x Remote control. 1 x User Manual.