With its lightweight design, the IM20 is ideal for traveling. After a 70-minute charge with the flash's included USB-C cable, the IM20's built-in lithium battery provides up to 440 full-power flashes with a three-second recycling time. A constant green light indicates the flash is ready to fire again. Manually adjust the flash's output in five steps for greater lighting control. This flash works well for photographers creating close-up environmental portraits or smaller-scale product shots.