These breathing effort monitors are quickly becoming extremely popular.  Although referred to as newborn monitors, sensor monitors, breathing effort monitors, the one thing that these monitors are is highly portable, so baby can be monitored wherever they may sleep.  The first monitor of this type, Respisense Buzz became very popular in the UK, with the overwhelming "peace of mind" testimonials coming from customers.  Now the Snuza Halo, Snuza Go and the new Respisense Ditto have addressed issues of the Respisense Buzz, now all these monitors have user replaceable batteries.