Fun Generation AirZone 5.8Ghz Instrument

Works perfectly fine...in your bedroom. After a single gig, here are the cons...
1. Battery life is NOT 8 hours as advertised. Closer to 3/4 hours. I did leave it fully charged but unused for a week though.
2. Apprx 5 mins of low battery warning is too less to be really practical.
3. Smallest of obstructions caused signal drop. In my case, it was some tables/desks that didnt even have the lower part fully covered.
4. Usable distance is around 35 metres as advertised (I wish this advertisement was being on the safe side).
Most appropriate use of this gadget would be in practice or on a stage which one is already familiar with. Its ergonomic, looks good, dual charging cable is a plus, no signal interference (5.8 ghz helps), and most importantly there is no noticeable latency or tone change.