Bought the SRL 03 to fit into my new Shoei Neotec 3 helmet. Item was well packed and easy to install. Particularly liked the 'mesh' feature and the simplicity of operation. Once fitted this piece of kit is very discreet and looks as if it actually came with the helmet. No bulky add ons to the exterior of the helmet helps keep wi d noise down to a minimum. Great piece of kit which is easily paired with phone and navigation devices.