Lingo iRis iPhone 4 Battery Pack with Built-In FM/DAB/DAB+ Radio - Black - £49.99 At Amazon

Give your iPhone 4 a DAB and FM Radio with the case and App

The Lingo iRis will give your phone both a battery pack and a FM/DAB/DAB+ Radio, making this a truely product. iRis is world's first portable DAB receiver that supports colour slide show. With iRis battery pack, your iPhone 4 is enriched by colorful radio. The built-in FM/DAB/DAB+ receiver turns your iPhone 4 into a radio player in serviced area. It is the only DAB receiver that has passed iPhone's accessory power requirement. The headphones you plug into the iRis will act as an antenna.

Built in 1500 mAh battery will keep your iPhone topped up during the day

The built in 1500 mAh battery will keep your iPhone's battery topped up during the day, the iRis will practically double the battery of your iPhone 4 allowing you to game, talk and FaceTime for a longer period of time.

Case will automatically start charging phone when it falls under a user set percentage

The Charging Wizard is an intelligent power management system which will monitor your iPhone 4's power capacity and will automatically start charging when the iPhone's battery reaches a percentage that you set, meaning you will never have to worry about turning on the battery pack.

Cutouts for ports and features of iPhone 4

The Lingo features cutouts for the various ports and features of the iPhone 4 including the camera and flash on the back and the volume controls on the side.

Micro-USB port allows for charging and synchronising

The built in Micro-USB port will allow for charging of the Lingo when its battery becomes depleated, the port will also let you synchronise your iPhone whilst in the case, meaning you won't have to remove the phone from the case to use it.