Yet again we have another gadgety clock to report on, what’s different about it this time, well the battery is powered by plain old water.

It does seem a pretty inventive (and cheap) way to power a clock (a water refill lasts 2-3 months). If us humans can be powered by the elixir of life, the liquid beer I don’t see why a simple LCD clock can’t be powered by water. Heh maybe filling it with bear would make time travel possible.

A clock is not a clock unless it can do some unclocky things and the H2O powered time piece is no exception, it also offers the advanced functions of an alarm, a countdown timer and a thermometer WOW. The method of switching between these functions is quite cute, you simply rotate the clock (I can imagine a few of these falling off the bedside table first thing in the morning).

Boring function list follows:

• Modes: Clock, Alarm, Countdown Timer, Thermometer
• Clock is 12 hour only
• Hourly Chime (always on) – I really hope that doesn’t mean you can’t turn the chime off
• Thermometer displays temperature in °C and °F
• Dimensions: 3.2″ diameter, 1.3″ depth

The H2O clock is available from ThinkGeek.com for under $20