Exposure Sirius Mk11 - 1300 Lumen Stock Item:Null SIDE Entry Clip Titanium Backing Nut

Titanium Backing Nut

With this adapter plate

Enduro 2-Ply Weight 1180g

but lighter too

many headsets are offered as separate top and bottom assemblies for maximum flexibility

Exposure Sirius Mk11 - 1300 Lumen Stock Item:Null SIDE Entry Clip Titanium Backing Nut1300 Lumens 1 130 Hour Runtime 90g Introducing the Sirius 11, the ultimate companion for your daily rides and the perfect fusion of output, weight, and endurance. Every element of the 11 has been meticulously engineered to deliver unmatched performance for riders who demand the very best. In the Box Sirius 11 QR Handlbar Mount USB C Charge Cable Specification. LEDs 1 x White XHP35 IP Rating IP67 Max Lumens 1300 Battery 4,000 mAh Li Ion Runtime 1 130