The picture comes with exactly whats shown, a charging dock for two wii-motes, the usb cable that connects to the console, and two batteries. The cable is relatively short, theres no extension for it and the batteries do seem a bit cheap in construction. However that doesn't really matter as you play, you won't notice it at all. The station is also designed for the wii-motes to charge without the wii-mote plastic cover, so it has to be removed when you charge it. The docking station also changes lights when charging, from red, purple and blue when its fully charged. As for performance, it performs with no problems whatsoever and the charge life is quite nice. For 7 dollars, and 2.99 shipped, this probably one of the best investments for any wii owner, as you will save a ton of money in batteries. Very good buy compared to other more expensive wii-chargers.
Also note that when you get the batteries, they have to be charged for 12 hours before usage, the note is on the actual battery pack itself though if you need more details.
If you still haven't picked a charger for your wii, this beats having to buy a bunch of back up batteries, and for the price its a definite steal!