BMI270 Smart Ultra-Low Power IMU Bosch BMI270 Ultra-Low Power Smart Inertial Measurement Unit (IMU) specifically targets wearable applications offering a strongly improved accelerometer performance. BMI270 includes intuitive gesture, context, and activity recognition with an integrated plug-and-play step counter that is specially optimised for wrist-worn devices. The IMU is also well-suited for other types of wearable devices, such as hearables, smart clothes, smart shoes, smart glasses and ankle bands.