Specifications Output / Runtime -- White Light High 1,500 Lumens / 1.75 Hours* Low 100 Lumens / 10.25 Hours* Length 4 .6 inches Weight 4 .5 oz The revolutionary smart phone video illuminator + charger enables smart phone users to shoot vibrant high-quality video at night or in poorly lit spaces -something never before possible! It features two high-performance LEDs whose light output is shaped by two specially designed reflectors that create a blended beam shaped to perfectly fit a 16:9 HD video frame – up to 1500 lumens and with an effective range of 50 feet. FirePak's disbursed light pattern and far-reaching range renders breathtaking video images under low light conditions that can also be used for still photos. It has four output levels that are selectable remotely via a free Bluetooth app or manually with the integrated side switch, so the right amount of light can be selected. SureFire offers high-quality phone cases, sold separately for the iPhone 6/6S/6Plus/7/7Plus and Galaxy S5, that easily and securely attach the phone and phone case to the FirePak's integrated rails. The FirePak pulls triple duty as a bright video light source, charger for your phone or electronics, and powerful handheld light. It will be indispensable for anyone with a smartphone. Own the night with the FirePak.