Treo 680
| Manufacturer | PalmOne | 
|---|---|
| Series | Trēo | 
| Availability by region | November 2006 | 
| Predecessor | Cingular Wireless Trēo 650 (GSM) | 
| Successor | AT&T Palm Centro (GSM) | 
| Compatible networks | Quad band (850/900/1800/1900) GSM | 
| Dimensions | 111.8 mm H x 58.4 mm W x 20.3 mm D (4.4 inches H x 2.3 inches W x 0.8 inches D) | 
| Weight | 158 grams (5.6 ounces) | 
| Operating system | Palm OS Garnet v5.4.9 | 
| CPU | Intel 312 MHz XScale PXA270 (Bulverde) | 
| Memory | 128 MB (64 MB user available storage) | 
| Removable storage | MMC, SD/SDHC/SD I/O | 
| Battery | 1200 mAh Li-ion battery | 
| Rear camera | 640x480 VGA (0.3-megapixel) with 2× digital zoom and video capture support | 
| Display | 320×320 65k color illuminated TFT LCD touchscreen | 
| Connectivity | GSM/GPRS/EDGE class 10 radio, Bluetooth, IrDA, Dial-Up Networking | 
| Data inputs | QWERTY Keypad and touchscreen | 
The Palm Treo 680 is a combination hybrid PDA/cellphone, or smartphone as the successor to the company's Treo 650.
It was the first-ever Palm OS Treo with no external antenna.
The Treo 680 is older, larger, and heavier than the Palm Centro. But the Treo 680 has a larger keyboard which is more comfortable to type on. There are other differences between the Treo 680 and the Centro. An article on the Treonauts weblog includes a good comparison chart and some in-depth commentary.