Features: YONGNUO YN256 is a large professional LED video light with light guide plate light source which brings you softer light and wider light angle. With high color display index LEDs, 256 SMD LEDs, CRI 95, perfect for restoring subject color. Back with 2 control buttons to adjust the brightness (10%-100%), color temperature 3200-5500K, the light can satisfy your different lighting effect needs. It can be powered by 2 NP-F series lithium batteries or external power adapter, support NP-F series battery such as NP-F550/F970/F750. (Battery and power adapter are not included.) Equipped with angle adjustable ball head support, convenient and efficient. The light can be installed on the light stand or tripod for use. The LED light has a battery test button to test the electric quantity and indicators to show the current battery level. Constant current LED technology, no light ripple, strobing, flickering. Specifications: Light source: 256 SMD LEDs Color temperature: 3200K-5500K Power: 25.6W Average life: 50,000 hours 100% Brightness (LUX): 1700 (0.5m at 5500K) / 1500 (0.5m at 3200K) Brightness range: 10%~100% Color rendering index: 95 Power supply: Two NP-F series lithium batteries or external power adapter (not included) Item size: 350*240*23.6 mm / 13.8 * 9.4 * 0.9in (without ball head mount) Item Weight: 867g / 30.6oz (without ball head mount) Package Size: 31.8 * 39.5 * 6.1cm / 12.5 * 15.6 * 2.4in Package Weight : 1400g / 49.4oz Note: It is recommended to use an AC adapter with an input voltage between 15 and 24 volts and a current of 3A or more. The light stand in the picture is not included. Package List: 1 * Video Light 1 * Ball Head Mount 1 * User Manual (English, Chinese)