TI-503-01Model: TI-503-01 Code: ok
Battery:
  2 x 396
WCase: black plastic WBand: rubber matching bracelet Face: red / racing car frame 
Manual: Yes Box: No  Light: led
Year: 1979 Price: $ 19.90
Function: The watch has five functions- hours, minutes, seconds, month and date
Info: 
same model in various frame TI-503-02 
TI-503-03 TI-503-04 TI-503-05