It signals obstacles, signalling buoys, wharves, harbour entrances, etc. Fitted with seagull scarer.Powered by lithium batteries charged via a mini solar panel.The light comes with a bracket and clamp for 18/32-mm tubes; UV-, oil- and corrosion-resistant; CE type-approved.Switching on:1 - Automatic twilight switching with flashing mode activation (4 flashes in sequence x 52 cycles/minute).2 - 30-m reach radio remote control.3 - Manual.Manually- or radio remote control-operated functions:VERSION A- White fixed light.- White single FLASH.- White flashing light (4 FLASHES in sequence)- White SOS light.- Off.VERSION B- fixed coloured light (green);- FLASH coloured angle (green);- Gradual FLASH (green);- White SOS light.- White fixed light.- Off.Dimensions: 115x73 mm; weight: 225 gr + 120 gr (bracket).