1.hud speed display (BY-03088) 2.hud,led hud 3.hud display hud speed display BY-03088 Feature: *Display speedirevltimeltem.lvol.llamp *Automatically activate or deactivate *DIY series product,high quality,high technology Technical parameter Working voltage:D.C.10-15V Working current:300mA Power protection of wrong connection:yes Fuse:inside self-recovering fuse HUD main device size:75*45*15mm Working temperature:-40 +80