Use the versatile silicone band to wrap around your arm for jogging at night, attach to your bicycle, or your backpack. It has 3 functions including 100% white, 50% white/red, and red flashing. There are 6 white SMD and 3 red SMD bulbs and comes with 3 AAA batteries.Use the versatile silicone band to wrap around your arm for jogging at night, attach to your bicycle, or your backpack. It has 3 functions including 100% white, 50% white/red, and red flashing. There are 6 white SMD and 3 red SMD bulbs and comes with 3 AAA batteries.