1. USB voltage regulator, can charge mobile phones, mobile power, GPS, lights and other electronic devices. The problem of outdoor power shortage.2. lighter: car battery charger, car battery is insufficient and unable to start problem.3. Suitable for outdoor, camping, hiking, climbing, traveling, fishing, desert island survival4. Waterproof design, IP65 grade, light and portable, easy to carry.5. Widely used in solar backpacks ,automobiles , ships , aircraft , buildings , etcPower generation: 100WMaximum power (pmax): 25WOpen circuit voltage (voc): 20VMaximum power voltage (vmpp): 18vShort-circuit current (): 1.5AMaximum power current (impp): 1.25AOutput: 18VStandard test conditionsAM=1.5Irradiance=1000W/Temperature = 25Celsiuscolour:As shownMaterial:Monocrystalline siliconsize:540 x 280 x 2.5mmPackage Contents:1 x 40A Solar controller1 x Solar panel1 x Chinese and English manualOnly above package content, other products are not included.Note: Light and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.