Designed for tactical missions. Comparable to any light stick, but easy to switch on and off. Only slightly larger than the two AA-batteries it contains. The fluorescent phosphorous surface (known in watches) glows evenly, softly and up to 120 hours depending on the version. Waterproof to 50 metres and very sturdy. Fitted with eyelet for universal mounting. 13 x 2.7 cm Ø. 27 g without batteries. In contrast to conventional bulbs or LED lights, this light stick is not blinding and does not cause the pupils to contract when looking into the light.