Lightweight, waterproof inflatable solar powered light with 4 modes: low, bright, super bright and flashing. Use the straps on top and bottom to attach it to your kayak or anywhere else you need it. When fully charged (7 hours of direct sunlight), the lithium-ion battery will last up to 24 hours. There is an indicator showing battery level so you know when you need to recharge. The light itself measured 12.7 cm across and collapses to 2.5 cm thick, so it's easy to stuff into your pack or PFD.