Atomic clock are now available in a small, low power oscillator

At only 0.45 inches high, the SA.45s CSAC is the world’s first atomic clock with the small form factor and low power consumption portable applications demand.

Key Specifications

• 16cm³ volume
• 35g weight
• ±5.0E-11 accuracy at shipment
• σy < 5 x 10^-12 at T = 1 hour short-term stability (Allan Deviation)
• <3.0E-10/month aging rate
• 115mW power consumption
• ±1.0E-9 temperature coefficient (-40°C to +85°C)

Technology presentation
http://www.brainshark.com/Steve_FatSymmetricom/vu?pi=691826191&dm=5&pause=1&appKey=77



datasheet:
http://www.symmetricom.com/media/files/downloads/product-datasheets/ds%5Fcsac.pdf