Type : Walking Aids Adjustable Detection Range : 3m outdoor and 1.8m indoor Four intuitive vibratory patterns to convey obstacle distance information Ergonomic grip for comfortable holding and cane tapping Adjustable sensor mechanism for use by persons of different heights Sound indicators to convey battery level, charging status, sensor and vibrator failure In built rechargeable battery 10 hrs battery back up and easy charging Can be easily attached/detached from a standard white cane