DARMA Pro Comfort Foam Seat Cushion Posture Coach and Activity Tracker, iOS/Android Imported Reduces your sedentary time and coaches you to sit better by sending you poor posture alerts and stretching guides Track your breathing rate, heart rate and stress level, help you better understand and improve your health status Last up to 2 weeks when fully charged Made of fine material, comfortable and durable, a perfect fit for most chairs customer satisfaction