Led Safety Light250 Lumens Of Brightness: It Can Illuminate An Area Of 20 Meters In Front Of You, Protecting You From Some Potential Dangers And Providing Safety During Your Night Running.3 Modes Led Flashing LightThe Running Light Has Three Modes For 1 Led In Front With White Light: Strong - Weak - Flashing; 8 Leds In Red Light In The Back Which Corresponds To The Three Modes Of White Light.Rechargeable Led LightNo Batteries Required, Just A 5-Hour Charge With The Included Usb Cable, Allowing Up To 8 Hours Of Continuous Use. Only 200G, The Whole Set Of Lamps Remains Lightweight And Does Not Hinder In Any Way For An Activity.Adjustable Strap Comfortable To WearThanks To Its Adjustable Strap In Length With Elasticity, It Allows You To Adjust The Size Of Your Body, Easier To Wear Than A Headlamp. The Lamp Is Easily Placed On The Chest, Ing Your Hands And Once Well In Place, It Is Absolutely Not Annoying For Running! The Lamp Adapts To Many Body Shapes And Is Suitable For Both Adults And Children.Waterproof Application-- Functioned With Ip65 Waterproof To Ensure The Operation Of The Running Light In The Water Mist When It Flows In The Rain. Perfect For Running, Walking, Jogging, Etc.