Not many are familiar with Bluetooth 4.0 standard, so lets take a look on the technology which runs on minimal power. Bluetooth is a networking technology which lets devices connect to each other in order to transfer data. The Bluetooth 4.0 technology uses a Low Energy Consumption (BLE) feature which lets the devices running it draw very little power in order to function.
iPad 3 becomes the first tablet that features Bluetooth 4.0. So you no more have to worry about your Bluetooth connection sucking power. You can use that Bluetooth keyboard, mouse or the headset for hours before needing to recharge your tablet. And those BLE Bluetooth peripherals would run for months before you need to recharge or replace the batteries.