Amaran 528S is the ultimate LED video light that gives you spot lighting. It features strong and steady light manual brightness control and uses PWM technology to decrease power dissipation. It is expandable for maximum brightness small for easy portability and has an efficient dual power supply system. Use Amaran 528S to get the same professional lighting seen on TV and Hollywood. A. Main Features Functions 1. Spot lighting 2. Digital brightness display 3. Brightness wheel 4. Charges batteries when powered by AC 5. Double power supply system 6. Battery power indicator B. Property 1. High color rendering LEDs (Ra>85) 2. Long lifespan and steady light 3. PWM technology for low power consumption 4. High efficiency energy saving bulbs 5. Efficient heat dissipation; C. Design 1. Slim design 2. Universal lamp bracket 3. Diffusing filter and warming filter (3200K) 4. Light for hand held usage 5. Carrying case included; D. Compatible Lithium Batteries: Sony NP-F series: NP-F550 / F570 / F770 / F960 / F970; NP-FM series: FM50 / FM51 / FM55H / FM500H; NP-QM series: QM50 / QM51 / QM71D / QM91D