Mobile phone developers in Japan develop an original way of displaying a phones current battery level using a ‘water level’ and a motion sensor.

The N702is by NEC and Japanese mobile network NNT DoCoMo uses a motion sensor combined with a graphical ‘liquid’ level indicator to show the user the phones current battery level when the phones screen saver is active. The ‘water’ level of the screen directly relates to the amount of power there is left in the battery, the lower the battery gets, the lower the ‘water’ level gets.

Using the 3G phones triple-axel speed motion sensors, the on screen ‘liquid’ reacts to movement just as it would in any container. Bubbles appear when a call or text message is received. Other features include an ‘hourglass’ that is activated when the phone is stood up then turned over as well as alarm clock that can be switched off by shaking the phone. The phone also allows the user to ‘pour’ (via bluetooth I assume) information from one handset to another when the phone is lean it towards another handset.

Although the phone is available in three colors, ‘Mineral Water,’ ‘Cafe Latte,’ and ‘Strawberry Milk’ it is currently only on sale in Japan.