This Panasonic AJ - PX270 handheld HD camcorder has an operation time of 2817 hours. It comes with the correct power supply. However, note that the card slot cover is broken and doesn't close fully, and there's no lens hood included.

Using this Panasonic AJ - PX270 camcorder is easy. First, connect it to the correct power supply that comes with it. When you're ready to shoot, turn it on and start recording your HD videos. Since the card slot cover is broken, be careful when inserting or removing memory cards to avoid any issues. Also, without a lens hood, you might need to adjust for glare in bright light. For maintenance, keep the camcorder clean by using a soft, dry cloth. Don't expose it to extreme temperatures or moisture. If you have any other problems, it's best to contact a professional for help.