1、Improve safety: Improve the visibility of cycling, jogging, hiking, and camping at night, making you feel safer in the dark. 2、Applicable to: You can wear it on your body and install it on your pet's collar or on your bicycle. 3、3 lighting modes: This safety light has 3 unique lighting modes: stable lighting, fast and slow flashing. 4、Lightweight: Lightweight, compact design, easy to carry. 5、Easy to handle: The lights are to be fixed by clip or hook and loop fastener. Material: ABS + electronic components Size: about 5.5*3.0*1.8cm/2.16*1.18*0.70 inch Light source: 5LED bulb Power: 2*CR2032 button battery Function: always on / flash / slow / off Lighting time: about 48 hours 1* running warning light 1* bandage sticker 1* screwdrive