Ronhill say: 10 lumen LED light to aid visibility. Magnetic attachment allows you to put this on any clothing item, in any place.The two-part device features an LED component with magnet and a backing plate to complete the unit. Features 3 light modes from static ON, slow and quick flash. Suitable for products and fabrics less than 1mm in thickness.

• 10 Lumens
• Suitable for fabrics less than 1mm thickness
• Do not wash module
• 3 illumination modes: Mode 1 - Slow (low power) flash. Mode 2 - Quick flash. Mode 3 - continuous ON
• Operation: Long Press (2 seconds) to switch ON/OFF. Short press (0.5 secs) to change between modes
• Battery life: 1000 hours - Mode 1 - Slow (low power) flash. 500 hours - Mode 2 - Quick flash. 50 hours - Mode 3 - continuous ON
• Battery preservation: After 2 hours the light will auto switch to Power Save (Mode 1), then run for another 6 hours before Auto-Off