Sony open air headphone use

I am considering the Sansa Express but want to use Sony headphones model MDR G57G.  These are light head mounted and clamp around your ears.  I don’t like ear bud types.  My question is will the battery in the Express drive these? Here  are the specs.

Magnet

- Ferrite

Plug

- Gold-plated, L-shaped stereo mini plug

Headband

- Behind-the-neck, Single

Design

- Behind-the-neck

Type of Use

- Portable

Frequency Response

- 16Hz - 20,000Hz

Sensitivity

- 104dB/mW


Impedance

  • 24 ohms
    Driver Unit
  • 30mm
    Power Handling Capacity
  • 1,000mW (IEC)
    Cord
  • Oxygen-Free Copper, single-sided
    Headphone Type
  • Open-air, Dynamic
    Cord Length (Approx.)
  • 5 ft (1.5m)

Here is the link to the headphone: http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&productId=11034801&langId=-1

Yeah, i dont see why they wouldnt work… They look like normal headphones that use the 3.5mm jack.