Life Jacket Light LED Self-Lighting Life Saving Conspicuous Lamp (Red)

LED bulbs: energy saving, high efficiency and long service life. The shell adopts high-frequency welding, which is beautiful, firm and waterproof. Luminous form: flash. Easy to use: It adopts gold-plated copper column design, which automatically lights up when it touches water, and does not need to be turned on in advance.

eBay