Amazing value: Each of these 3x red (family pack) LED lights has 5 super bright LEDs. Each is powered by two button batteries that have been installed. This provides a powerful super brightness for up to 100 hours. With superior design and quality, these devices are sturdy, compact, slim, lightweight, durable and reliable. It is a perfect choice for the whole family. Ultimate versatility: Clip-on multi-function flashing warning light, easy to carry and carry around. This essential safety item has many outdoor activities: it is very suitable for runners, joggers, cyclists, children, walkers, climbers, dogs and more To ensure safety, it can be seen by drivers from a distance when exercising at night, dawn, dusk, foggy morning and rainy days. It is the best choice for various applications. Very easy to use: Features: 3 setting modes: stable, fast strobe, slow flash. Easy to use and user-friendly. With its powerful heavy-duty back clip, it can be hung on backpacks, pockets, belts, running gear, armbands. A convenient low-maintenance product. Weather resistance, suitable for all conditions.