S740
Features:  
1. Operation system: Windows Mobile 6.1 with Open SDK for software customization. 
2. Display: 3.7-inch high light VGA display, suitable to work in sunlight or  under limited lighting. 
3. Heavy duty case with GE-Plastic, Industrial grade for Waterproof and dustproof
4. High quality Marvell platform processor PXA-310 624MHz XScale CPU

Specification: 
1. Display: 3.7-inch touch screen 
2. Positioning Accuracy: 1-3 meter ( Real time or SABS) 
3. Channel: 22 channels 
4. Waterproof: IP65

S750
Features:  
1. Professional GPS Card and Antenna, ASIC CMOS, COAST calculation patent, with higher accuracy 
2. Compatible work model with CORS and Base station of RTK Network. Enhanced SBAS make better solution
3. Individual multimedia CMOS for effective graphics operation
4. Alphanumeric Keyboard with touch screen, two ways for convenient input. 
5. AUTO Switch for external antenna, able to work as Static GPS with cm accuracy. 

Specification: 
1. Operation system: Windows Mobile 6.1 or Windows Embedded CE 5.0 ( optional ) 
2. multimedia CMOS: NVIDIA GoForce4000
3. Receiver: L1, C/A CODE, with carrier phase filter 
4. Channel: Single frequency, 12 Channels, SBAS( Dual-Channel tracking) 
5. Waterproof and Dustproof: IP65