Fangrui Product Details 4 Modes Of Light Change: This Outdoor Night Clip Lights Have Up To 150 Of Light And Are Designed In 5 Different Lighting Modes, Respectively High, Medium (), Low () And Red Flashing For Different Situations, You Can Switch Lighting Modes With The Click Of A Buttonusb Rechargeable: These Reflective Led Lights Do Not Need Batteries And Can Be Through Any Usb Interface, Such As Laptop, Mobile Charging Device, Etc., To You With An Efficient And Simple Use Experiencesafety Design: These Reflective Usb Rechargeable Running Lights Are Bright Enough To Yourself And The Road Around You While You Jog At Night, So That Others Can See You From Hundreds Of Meters , Reducing The Frequency Of Accidents And Making It Easier To Exercise Outdoors At Night And Serviceable: Outdoor Night Running Gear Is Made Of Quality Plastic, Light In Weight And In Size, Can Run For About 3-4 Hours On A Full Charge, Suitable For Most Weather And Seasonswidely Applied: These Reflective Usb Rechargeable Running Lights Can Be Clipped On Hats, Belts, Collars, Pockets, Backpacks, Dog Collars, Etc., So You 't Have To Hold In Your Hands, Thus Reducing The Of Running, Jogging, Climbing, Camping, Outdoor Activities, Practical To Usecolour:blackmaterial:plasticpackage Contents:2 * Outdoor Night Clip Lightonly The Above Package Content, Other Products Are Not Included.note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.