The GoalZero Yeti 1500X Solar Kit With Boulder 100 Briefcase is the solution to expansive power needs when we want to avoid generator use. The Yeti 1500X operates as a quiet, clean-running alternative that can power our devices for events, power outages, or camping. It uses a lithium-ion battery that is protected by a water-tight enclosure to keep things safe inside or outside, and it can be replaced by the user for a longer lifespan of the entire system. Wi-Fi connectivity allows us to control the Yeti from our mobile device, so we aren't constantly making our way over when there's fun to be had. The Boulder 100 Briefcase is built with tempered glass that can stand up to rigorous use, and delivers a powerful 100 watts to the system when used in optimal conditions.