Bright LED running light makes others know your actions more clear to keep you safer with a special and great fun and experience that you never had. No matter the rainny day and hot day, you can use this light on anywhere. This LED safety light is also suitable for people who likes running, walking or riding outside at night. Features - Color: Yellow + Black + White + Red + Blue - Material: silicone shell, ABS engineering plastic, circuit board - Size: 4 x 3 x 3cm. - Mode: Steady / Flashing / Fast Flashing - Lamp beads: LED - Button battery: 2 XCR2032 (3V) installed - The outer shell is covered with high-elastic waterproof silicone, which is stable, durable, and strong stretch tension. It can be used safely during - 40-220. - Can be installed on handlebars, standpipes, front forks, rear forks, backpacks, and helmets. Emergency lighting, outdoor play at night, climbing lighting, lighting are all suitable. - Installation or removal can be done in 3 seconds without any tools. - 3 switching modes: fast flash, slow flash, constant light, off, you can switch quickly according to your actual needs. - Fully bright for 35 hours. Blinking can last for 160 hours. Warning effective visibility up to 600 meters.