• Models
PCG-Z1A
PCG-Z1A1
PCG-Z1AP1
PCG-Z1AP2
PCG-Z1AP3

Processor
Intel® Centrino™ mobile technology
Intel® PRO Wireless Network Connection 802.11b
Intel® 855 Chipset Family
Z1A, Z1A1, Z1AP1: Intel® Pentium® M processor 1.30GHz1
Z1AP2: Intel® Pentium® M processor 1.50GHz1
Z1AP3: Intel® Pentium® M processor 1.60GHz1

• Other Interfaces
RJ-11 modem jack, i.LINK® (IEEE 1394) interface3, 2 USB2.0, RJ-45 Ethernet, VG output, headphone (stereo), monaural mini-jack microphone, port replicator connector
Estimated Battery Life 4
Z1A, Z1A1, Z1AP1, Z1AP2:
Standard lithium-ion battery, supports dual battery operation
2.5-6.5 hours 4
Z1AP3:

Double-capacity lithium-ion battery supports dual battery operation

Full info here
5.0-13.0 hours 4