The SL10 ($150) released before the higher end models SJ20 ($200) and color screen model SJ30 ($300). The two lower models had a monochrome screens, but the SJ20 had a backlight.
The two higher models had rechargeable battery. Battery last longer on devices with monochrome screens.
All 3 models had a Motorola Dragonball VZ 33Mhz Processor and ran Palm OS 4.1S.
Documents To Go, PictureGear Pocket, gMovie, and CLIE Paint were the included software.
You can edit Word and Excel files using Documents To Go (Standard Edition) by DataViz.
The closest competitor at the time as the Palm Pilot PDAs.
Sources:
https://www.forbes.com/2002/07/24/0724tentech.html?sh=e8aaa0d75593
https://old-organizers.com/MorePicts/MP174.htm
https://www.cnet.com/reviews/sony-clie-peg-sj-review/
http://www.palminfocenter.com/news/3909/review-first-impressions-of-the-sony-pegsl10/
https://www.palminfocenter.com/news/4091/review-sony-pegsj30-part-i/
http://www.palminfocenter.com/news/4071/review-sony-pegsj20-part-ii/
https://en.wikipedia.org/wiki/Sony_CLI%C3%89_PEG-SL10