The Braun All-in-One Style Kit Series 7 and Series 3 are trimmers for men that offer multiple functions, including beard trimming, hair clipping, body grooming, and precision shaving. Both series feature the Precision Wheel with 40 length settings and Braun's sharpest ProBlade, which is efficient in every stroke, even in tricky areas for great finishes and comfortable all-over body grooming. The trimmers are built to last, with a powerful Li-Ion battery with 100-minute cordless runtime, lifetime sharp blades, charging stand, and a premium case for storage. The Series 7 also features AutoSense technology, which adjusts the power according to the density of the beard. The All-in-One Style Kit Series 7 is available in 11-in-1 and 12-in-1 kits, while the Series 3 is available in a 7-in-1 kit. There are no specific details available on the ingredients or materials used in the trimmers. Customers have generally given positive reviews for the Braun All-in-One Style Kit Series 7 and Series 3 trimmers, citing their versatility, precision, and ease of use. Some negative reviews have mentioned the lack of a cassette release button and the poor quality of the user manual.