Self-activating lights are particularly suitable for activities where there is no permanent contact with water. They can be fitted to a jacket or lifejacket to activate when submerged. This lamp operates automatically and has an on/off button that can also be used to test operation. The clip can be repositioned to remove or replace the light, while ensuring a firm hold on the strap. - Battery: Alkaline, 5-year shelf life (-30° to +65°) - Operating time: 40 hours minimum - Dimensions: 85 x 42 x 16 mm