Very prompt delivery, I have bought four of these so far. they work really well and are quite sturdy. they have a nice soothing blue light when plugged in. The only problem is thatthe spring loaded contact pin that connects to the back of the 12v socket tends to retract into the body of the adapter and get stuck, so sometimes the power is lost. If it wasn't for this minor but important fault I would give it 5/5.