The 3M CR70 film is a high-performance, non-metallized automotive window film from 3M’s Crystalline series, known for its excellent heat rejection (up to 58%) and 99.9% UV protection, using nano-technology for clarity, glare reduction, and signal-friendly performance (GPS, phone). It’s a lighter-tinted film designed for windshields, providing significant cooling and UV blocking without compromising visibility, especially at night, and is a popular choice for keeping car interiors cooler. Key Features & BenefitsHigh Heat Rejection: Blocks a significant amount of solar heat, keeping car interiors cooler and improving AC efficiency.UV Protection: Blocks virtually all harmful UV rays, protecting occupants and preventing interior fading.Clarity & Glare Reduction: Offers superior clarity and reduces glare from sun and headlights, enhancing night vision.Signal Friendly: Non-metallized construction ensures no interference with GPS, mobile signals, or satellite radio.Nano-Technology: Utilizes multilayer optical film and ceramic nano-technology for high performance.Light Tint: Provides substantial heat rejection with a lighter look, making it suitable for windshields where darker tints are restricted. Usage & ApplicationWindshield Focus: Primarily designed for front windshields, where maximum heat entry occurs.Professional Installation: Sold and installed by authorized 3M dealers.Compliance: Its light tint often helps comply with regulations (like 70% Visual Light Transmission for windshields in India) that prohibit dark films. How it WorksIt uses advanced layers to reject heat and UV, rather than just blocking light like traditional dyed films.The “CR” signifies it’s from the Crystalline series, which offers the highest heat rejection in the 3M line.