Ledlenser iH5 Rechargeable LED Headlamp It's actually lighter than Canon's

It's actually lighter than Canon's EF 600mm f/4L IS lens

And since no heating element is required

electric plug

2 Cool Running 13w 10

Ledlenser iH5 Rechargeable LED Headlamp It's actually lighter than Canon'sLedlenser iH5 Rechargeable LED Headlamp Model #: WBB3083326 MPN #: 502024 The Ledlenser iH5 is a compact, simple LED work headlamp that keeps your hands free on the job. It offers a helmet mounting system to allow for quick removal and positioning of the lamp head for maximum flexibility. The rubber coated head strap keeps your light secure and in place, but you can remove the lamp head entirely from the strap and use as a handheld light with a clip.