I want to display a 4 digit number on a small device that fits in a hand.
I have a CR2032 3V battery at around 230mA, my microprocessor is a 8051 (in a [BLE112](http://www.glynstore.com/content/docs/bluegiga/BLE112_Datasheet.pdf)) usually uses about 0.9µA and I want the device to last as long as possible.

I've looked at the typical seven segment displays, which typically uses a few mA which is too much.

A alternative is the Sharp [LS013B7DH01](http://www.mouser.com/ds/2/365/LS013B7DH01_16_AUG_10-197624.pdf) which is used in Pebble and uses 5 µA, but seems a bit complex for my microprocessor (and expensive)?

There should be some simple low power 7 segment display which has a average power consumption measured in µA (not mA), but I simply can't find it or think of some other solution.

What alternatives do I have?