USB and 512MB

Features:

Standard USB interface and USB extension cord included (1 meter)
Sleek design, very lightweight (this is not a bulky watch)
Plug and play, easy operation (appears as a USB mass storage device)
Can be password protected using included software
Can be used as a boot disk
LED indicator light shows device connectivity and data transfer
Operating Systems: Win 98, ME, 2000, XP, Linux 2.4 or higher, Mac OS 8.6 or higher
Reading speed: 1000KB/sec. Writing: 920KB/sec
Shock proof and Anti-static
Water resistant to 20 meters (let USB connector dry before using)
Japanese movement with 3-year battery life
Memory size: 512MB, 256MB, 128MB
Weight: 1.5 oz (43 grams)
Dimensions: 1.5" width x .375" thick (watch face)

By the way... the watch can be used to play movies directly off it!!! Ahhh, great!!! For a normal movie you thus have to carry around 2 watches to cover the approx 700 megs... for lotr 15...
more info on:
http://www.thinkgeek.com/gadgets/watches/5eec/