HL‑SML185 compact solar marine lantern delivers over 4NM visible range, compliant with IALA E‑200‑1 and USCG 33 CFR Part 66 & 67 for Class‑C maritime structures. Equipped with six angled solar panels to capture maximum sunlight, it runs reliably in low‑sunlight regions such as Europe, UK and Canada. Optional GPS synchronization enables multi‑lantern synchronous flash for river, marina entrance, channel marking and aquaculture sites. Supports red/green/yellow/blue/white multi‑color output, up to 256 IALA flash modes. IP66 waterproof, marine‑grade aluminum alloy base, easy quick installation. Optional larger lithium‑ion battery pack,4G remote control available. 2‑year warranty, long service life up to 20 years.