The smallest brightest light - anytime anywhere, Features: - Endurance-minded lithium coin cell batteries (require 2 CR2016 3V batteries) - Up to 15 hours of light per battery set - Operation from -20C degrees to +40C degrees - A durable stainless steel universal clip that attaches securely and releases quickly - Lifetime LED bulb - A programmable integrated chip allows multiple functions, Click for additional (4) functions: High Power Low Power Strobe Signal Mode - Light Projection: up to 50 - Construction: Two-piece easy-open snap shut (Flexible cover is co-molded and seamlessly integrated into the polycarbonate body) SKU: GRN2327