t637
Modes GSM 850 / GSM 1800 / GSM 1900
Weight 3.26 oz (92 g)
Dimensions 4.02" x 1.69" x 0.67" (102 x 43 x 17 mm)
Form Factor Bar
Internal Antenna
Battery Life Talk: 9 hours (540 minutes)
Standby: 300 hours (12.5 days)
Battery Type LiPolymer
Display Type: LCD (Color TFT/TFD)
Colors: 65,536 (16-bit)
Resolution: 128 x 160 pixels
TFT
Platform / OS (N/A)
Processor ?
Memory 2 MB (built-in, flash shared memory)
Phone Book Capacity 512
FCC ID PY7A1031012 » (Approved Mar 12, 2004)
Polyphonic Ringtones Chords: 32
Ringer Profiles Number of profiles: 8
Vibrate Yes
Connectivity
Bluetooth Supported Profiles: HSP, HFP, DUN, OPP, FTP, BIP, Sync
version 1.0b
Infrared (IR) Yes
PC Sync Yes
USB Yes
Contacts
Multiple Numbers per Name Numbers per entry: 5
Picture ID Yes
Ringer ID Yes
Voice Dialing Yes
Customization
Custom Graphics Yes
Custom Ringtones built-in 4-track polyphonic ringtone composer
Data & Network
Data-Capable Yes
Packet Data Technology: GPRS
class 8
WAP / Web Browser WAP 2.0
Input
Predictive Text Entry Technology: T9
Side Keys Yes
Messaging
Email Client Protocols Supported: POP3, IMAP4
EMS / Picture Messaging Yes
MMS Yes
Text Messaging 2-Way: Yes
plus instant messaging (IM)
Text Messaging Templates Yes
Photo & Video
Camera Resolution: CIF (352 x 288)
Productivity
Alarm Yes
Calculator Yes
Calendar Yes
SyncML Yes
To-Do List Yes
Voice Memo Yes
Software
Games supports downloadable Java and Mophun games
Java (J2ME) Version: MIDP 1.0

Here is even more info on this straight from sony

http://www.sonyericsson.com/spg.jsp?cc=global&lc=en&ver=4001&template=pc1_1_1&zone=pc&lm=&prid=1476