WHISTLER WHL-40 MotoGlo(TM) Half-Helmet Safety LightFits half helmets Improves rider safety Wireless operation transmitter module must be hard wired installed on motorcycle Easy installation Low profile design 10 ultrabright LEDs indicate braking & signaling Rechargeable self contained battery Module may be paired to support 2 helmets Provides increased visibility of rider, with running lights, brake lights & turn signal indicators Includes pairing key, 5 wire tap connectors, USB charging cable, 3M(TM)