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TI 566 10Model: TI-566-10 Code: my
Battery:
  309
WCase: black plastic WBand: rubber matching bracelet Face: blue frame 
Manual: Yes Box: No  Light: bulb
Year: 1980 Price: xxxx
Function: The watch has six functions- hours, minutes, seconds, month , date and light
Info: yellow and red buttons, 
the same model with the writing Texas Instruments  TI-565-10