It will automatically flash when it is vibrated in a dark place.
The LED shines brightly, making it highly visible to those around you and helping to prevent accidents in dark places. Specifications: For 16mm canes
Color: White
Material: Natural rubber, PMMA (acrylic)
Size: Φ37.5×62mm
Power supply: 2 x CR2032 button batteries (batteries cannot be replaced)
Estimated usage: Approximately 1 year if used for 1 hour per day (estimated from the time of opening a new product)
Weight: Approx. 55g
