• It's small and light, can be easily attach to the rear of the bike, helmet, backpack, etc.
• 3 modes adjustable: constant light/fast flashing/slow flashing
• Daily life waterproof, aluminum alloy shell, solid and durable
• Easy to install and remove

Specification:

• Light color: Red
• Mode: constant light/fast flashing/slow flashing
• Power supply: 2 x 2032 button batteries (included)
• Shell material: aluminum alloy