TI 1788 IIIModel: TI-1788 III
Battery: 2 x LR43
Year: 1985
Info: Made in Taiwan 

The TI-1788 III combines the clock and alarm time function known from the TI-1788 II with a whole set of additional functions and includes:

• 8-digit calculator including full memory
• Clock with alarm time and buzzer
• World Time
• Calendar with Day of Week function
• Stopwatch with intermediate results
• Conversion capability (multiplies with and divides by a constant)