The link for viewer as below:

http://www.healforce.com/cn/index.php?ac=article&at=read&did=422

you can download the third Viewer suit for Prince 180B.

Features
1. Small in size,light in weight and easy to carry.
2. One-key measurement, easy to operate.
3. waveform and interpretation of results are displayed clearly on dot-matrix LCD screen.
4. Seventeen types measurement result can be presented.
5. Up to 1200 records for quick measurement or 20-hour data records for continuous measuring can be stored in built-in memory(32M).
6. Data records can be reviewed,copied,deleted,and uploaded as well.
7. Power saving technique with automatic shutting-down function.
8. Two AAA batteries are used to support more than 10 hours working time(wireless transmission function is disabled).
9. Wireless data upload function.

Product Features

• Quick 30 second single-channel waveform analysis with/without electrodes
• Up to 1200 records for quick measurement or 20-hour data records for continuous measuring can be stored in built-in memory.Presents results with up to 17 different types of waveforms and heart rate display ‧ Signal amplification (Gain Mode)
• Easy to read – Large, high resolution colour LCD display, FDA cleared, and 510(K) Number : K073152
• Compact, lightweight and easy to use
• Powered by 2 x AAA batteries (NOT included) with low voltage indication. Auto power-off after 35 second idle time