?Lightweight and durable, the Coast G4 is the perfect companion for your keys and it now comes in a colour range of green, blue or orange.?At less than 6.5 cm, this tiny torch shines 19 lumens of light at a 24 m beam range from four inexpensive AG5 batteries.The G4 features Coast?s Mini-Flood Beam? Optic System, which is a more compact version of the Multi Beam ? optics system, offering a brighter centre and diffused edges.