BluArmor

The range is built around its RIDEGRID mesh. Per the brand, the C30 links up to 20 riders with 16+ hours of battery, the C40 and C60 lines add eRIDEGRID for range with no stated ceiling, and crash detection with an automatic SOS call appears on the C20, C40 and C60 lines. The C20, C40 and C60 pages list IP67 waterproofing, and the brand says the units fit most full-face, modular and open-face helmets.

Worth knowing: the product pages point to a warranty registration form but do not state warranty terms, so read the warranty and refund pages on the brand's site before buying. Older models and the C10 show as sold out, and prices come from the brand's store.