Product size about : 21*9cm/8.2*3.5'' Product color: As shown in the figure Product material:Metal product features: Smart Solar Operation​​:Automatically switches on at dusk and charges by day using a 4V/90mA polycrystalline solar panel. Features a rainproof switch design ensure its left "ON" during installation for hassle zero-wire operation. ​​Tri Color Visibility Enhanced Optics​​:High-brightness LED lights in red, green, or white with multi-prism refraction technology. Visible up to 1 km away, plus reflective strips for added safety during marine fog or low-light rescues. ​​Marine Grade Durability​​:IP65 waterproof rating (avoid submersion) and salt-spray resistance. PC housing internal components, while the steel base withstands corrosion and impacts. ​​Ultimate Mounting Flexibility​​:Includes a detachable clip for poles/rails ≤6cm thick and adapters for 32mm pipes. Ideal for boats, docks, channel markers, highways, or guardrails no tools required. ​​Long Lasting Power & Eco Savings​​:Runs 6 nights continuously on two 600mAh Ni-MH rechargeable batteries. Zero battery replacements or wiring cuts costs and wasteperfect for remote locations. Precautions: 1. As we know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 pc Solar light