The Busch & Müller Turntec indicator set is a comprehensive signaling system specifically designed for e-bikes and bicycles, offering enhanced safety and comfort for riders. This ergonomic system allows for the indication of directional changes with a single finger, without taking hands off the handlebars, thus maintaining full control while riding. The set includes a multifunctional handlebar switch that controls the indicators and can also operate high beams and the horn when connected to compatible systems. It features a comfort blink function, where a short press triggers multiple blinking impulses, and a longer press activates continuous blinking until pressed again. Compatible with e-bike batteries ranging from 12-48 V and consuming 2 W for lighting functions, this system is approved for S-pedelecs, bicycle trailers, multi-track bicycles, and bicycles with fairings that partially or completely obscure hand signals. The black indicator lights provide clear visibility for other road users, while the red color option allows for additional customization. With model number 680 and a universal unisex size, this system can be installed on most standard handlebars. The Turntec system prioritizes rider safety through intuitive operation and reliable performance, meeting European standards for bicycle accessory integration. Installation requires basic mechanical knowledge and adherence to the manufacturer's instructions for proper wiring and mounting. The durable construction ensures long-term functionality in various weather conditions, making it suitable for daily commuting and recreational cycling. This product represents the successor to previous indicator systems, featuring refined ergonomics and expanded compatibility with modern e-bike electrical systems.