1.[Be Seen, Be Safe]The Reflective LED Armband is bright at night and has high visibility to protect your , providing you with 360-degree ultra-high visibility in low-visibility scenes and activities such as early morning and night, suitable for morning or night running, cycling, walking, pet walking and other activities 2.[Rechargeable] Unlike most LED Band on the market that require frequent battery changes, The Armbands come with rechargeable batteries. Just charge 2hours can guarantee 6-8 hours of work, enough for you to use. More practical, more user-friendly and more economical 3.[Lighting Modes] Equipped with three lighting modes, fast flash, slow flash, always bright, various lighting modes provide you with a variety of choices, more user friendly 4.[Universal]The Reflective LED Bracelets measures 35cm x 4cm and is suitable for all groups of people, just slap it where you want to wear it like wrist, ankle and arm. It doesn't feel like wearing it, the elasticity is suitable, it is durable, and it will not fall off