Lumo back is a very amazing device and equipped with modern technologies. Basically Limo back is like a waist belt and use for learning better posture specially in case of poor neck and upper back posture. It is highly sensitive at measuring lower back spinal posture. The posture sensor vibrates when you slouch from your lower back. Amazingly latest Bluetooth technology has been introduced, therefore you can you track your movements wirelessly and can get information about your posture through a compatible iPhone .IPod touch or iPad app. Huge discounts available from ice.