USB Chargeable LED Backup Light Bulb

A purpose-built emergency lighting solution offering USB-rechargeable convenience, long-term reliability, and broad-area illumination. Features low-attenuation LED chips for stable white light output over thousands of hours. The transparent PP mask ensures no light loss or shadowing, and the PP housing provides proven resistance to thermal shock and environmental stress. Its large lighting surface suppresses stroboscopic perception, and the bottom-mounted radiator sustains optimal operating temperature. Available in six standard sizes and power ratings: 20W (60mm), 40W (70mm), 80W (80mm), 100W (95mm), 150W (105mm), and 200W (120mm), each with distinct low/high allocation status indication. Designed for UK households, food vendors, festival traders, and emergency preparedness kits.