Braun 71-S4862CS Series 7 ShaverA smooth shave, even in tricky areas. This shaver is built for efficiency. AutoSense technology reads and adapts to your beard density, capturing and cutting more hairs in every shave. Key features: Electric razor with 360 adaptation for a smooth shave, even in tricky areas. Efficient even on tough beards: AutoSense technology reads and adapts power to your beard density, capturing and cutting more hair in every shave. Li Ion Battery for up to 3 weeks