This is an all-in-one solar street light — meaning the solar panel, LED lamp, battery, and controller are built into a single integrated unit. 
Specifications
flux / Brightness: Varies by model — many 300 W lights claim high lumen output (some sources list 30,000-36,000 lm for 300 W units)
• LED type / LED chips: Often high-efficiency LED modules (for example SMD3030 or 5050 LEDs)
• Color temperature (CCT): Typically ~ 6000 K (daylight / cool-white) for clear visibility
• Beam / light distribution: Beam angle often ~ 120° for broad area coverage
• Solar panel: Usually a mono- or poly-crystalline solar panel is integrated; conversion efficiency and panel power vary by manufacturer.
• Battery & storage: Many 300 W solar street lights use rechargeable lithium (often LiFePO₄) batteries for energy storage.
• Working / operating hours per charge: Fully charged battery can often power the light for ~10–12 hours (some sources claim longer depending on battery size and efficiency)
• Charging time (solar): Often requires 6–8 hours of direct sunlight to fully charge the battery.
• Durability & lifetime: Many 300 W solar LED street lights claim LED lifespan of 50,000 hours
• Protection / Weatherproof rating: Commonly IP65 (dust-tight and water-resistant) or higher — suitable for outdoor installation and various weather conditions.
• Housing / Body: Typically made of aluminum alloy (die-cast / cast), or durable weather-resistant materials, for corrosion resistance, heat dissipation and outdoor durability.
• Installation / Mounting: Designed for mounting on poles or walls — all-in-one design with solar panel + LED + battery + controller integrated, so no external wiring is needed in many cases.
• Control / Functionality (optional): Some models include features such as light-sensor (dusk-to-dawn), motion sensor, timer control, or remote control for brightness / timing / modes.