The Ra headlight is designed for dental and medical professionals where convenience and comfort with long run times are a priority. The design utilises the Nexus System which uses Neodymium magnets to connect the PowerPacks. This makes for quick and easy replacement and simple rotation for on/off and high/low setting. All actions can be carried out by an assistant. The contoured silicon tubes suspend the PowerPack, this counter balances the weight of the loupes, making them feel lighter on the nose. The contoured tubes hug the rear of the head to ensure stability while keeping it quick and easy to put the loupes on and take them off.