SP Visilite Evolite Safety Helmet Light has been developed as a method of increasing worker visibility without dazzling colleagues in close proximity. During optical testing Visilite® remained visible up to a distance of 50m. Easy Secure Fit. Easily rechargeable with a USB charging supply; PC, Mains or Car. Can be charged while fitted to the helmet. Micro USB cable supplied. Charge time: approximately 2.5 Hours. The clips and main housing are made from highly durable ABS. Visilite® is splash proof making it suitable for use in wet weather conditions. It has an operating Temperature Range of:+50ºC to -10ºC (14ºF and 122ºF). VisiLite®offers three lighting modes to suit the user's needs: Mode1: Static (9hrs), Mode2: Fast flash (150hrs), Mode3: Slow flash (190hrs).