The featured photo-luminescent round shape sticker is designed to glow in the dark. It flaunts a high performance and works as an immediate light source in case of sudden power failure and prevents fatal disasters. This photo-luminescent tape can glow for a long time and are great for using as guidance marking. 

other details: 

• 1. 10mm round shape sticker (15pcs) 
• 2. brightness: SAF grade (can last for 8-10 hours) 
• 3. conform DIN 67510-4 class E level