SOS 20K is a portable battery designed for when you need it most. Solar Charging for 4 devices at once. Water/Dustproof IP67. 20,000 mAh. 3-in-1 LED SOS Signaling. Product comes in a package – with SOS20K Solar Charger, 50Kn Steel Carabiner, 4 Braided Nylon, Aluminum Cased USB Charging/Date Cables (2 Lightening, 2 micro-usb), and 1 Waterproof Cable Case.