CTPLUS LT-300D Desktop Calculator 

Model：LT-300D

Plastic key

Extra Large Display

Size：177*128*32 mm

 Adventage ：

1. Auto Light-Off. Tap to Wake.  

 Auto light-off after 15 seconds.  
Auto Power-off After approximately 8 minutes. 

2. Saves power automatically.  

3. Comfortable for night use. 

4. No searching for buttons in the dark.