These are the major specifications of the Treo 600.

Radio:
CDMA 1900/800 dual band digital

Phone Features:
Personal Speakerphone
Hands-free headset jack (2.5 mm, 3 barrel communicator)
Microphone Mute Option
TTY compatible
3 Way calling

Processor:
144MHz Texas Instruments OMAP (ARM) processor

Expansion:
SD/MMC slot (SD I/O compatible)

Battery:
Rechargeable Lithium Ion
3 hours full charge time
4 hours talk time
10 days standby time

Palm OS Version:
Palm OS 5.2.1

Camera:
VGA resolution (640 x 480) 0.3 megapixel
Automatic Light Balance

Size/Weight:
4.41" x 2.36" x 0.87" without antenna (11.2cm x 6cm x 2.2cm)
6.2 ounces (175g)

IR:
Yes

Display:
LCD CSTN touchscreen (includes stylus)
3375 colors (11.5 bit color, compatible with 16 bit applications)
User-adjustable brightness and contrast

Keyboard:
Built in QWERTY keyboard plus 5 way navigation control
Backlight for low lighting conditions

Included Software:
Phone (including Palm OS Contacts, Favorites, Dial Pad)
Picture Mail
Blazer Web Browser
PCS Business Connect
Calendar (Palm OS Date Book)
Palm Dekstop/Hotsync Manager
SMS (text messaging)
To Do List
Calculator (basic/advanced)
Memo Pad
CityTime World Clock
PocketMirror Standard (for synchronizing with Microsoft Outlook)

System Requirements:
Windows 98SE, Me, 2000, and XP with USB port
Windows NT 4 requires serial cable, sold separately
Mac OS 10.1-10.2.x. with USB port
Latest versions may also be supported

Temperature Ranges:
0C-40C
5% to 90% RH