cameras designed with their own rechargeable camera battery have longer working times than those using disposable batteries so you can take more pictures before you batteries run down. If you get one that comes with a rechargeable battery be sure to check the price of a replacement battery. And it's a good idea to get a spare. That way you can have one on the charger/ready to use while you are taking pictures and when the one in the camera runs down you can switch to the spare and start charging the exhausted one. Give your ideas to save the life of batteries.