1 - Receiving this item in good packing. Tested with Arduino & its working with my android phone.
2 - Most important for me just place order 2 pic during low price tag (199+50) each cash on delivery.
3 - pin connection is difference which is 3.3v logic, most or interface device with 5 v logic. (my friend attach with arduino which is 5 v logic, after some time that module not working)
4 - you need to a logic level converter to attach this module.
5 - posting this review after using continuous ...

It is good and works fine. But due to the absence of level conversion chip it should be used with a 3.3 v voltage divider, though there is high impedance on the internal circuitry to protect from high voltage, but still it is better to use with a voltage divider. vcc can be +5v or +3v no issue, but the 'rx' line should be in 3.3 v level.
Otherwise good product. I think this review will help you.

When i got this item it has good packing.I test it out & it its 100% working.
1>fast respond
2>long range
and all the things you needed with a bluetooth module it has.

Bought it from seller Rotobotix. Packaging was really good. It is working fine with the Arduino Uno. Worth the money.

the best

working properly as expected

Awesome product ....
fantabulous overall experience

best bt price is too high

nice product as it is robodo salers

useful