... quality tempered glass 4. Japan Osram and Cree LED Product imageFeatures and benefits1.Made of top famous LED source Cree/Osram, high efficacy, long ... resistance to abrasion and corrosion, IP68.3.High quality tempered glass with excellent light transmittance.4.Comply with Ex, ib, IIC ... , T4, IEC60079-11, EN60079-11.5.Designed with advanced Optical Principles, making visual distance up to 200m.6 ...