Sears 728.58821
The Sears 728.58821 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 4 functions, 17 keys, and an LED (light-emitting diode) display typical of calculators of this era. The power source is 3xAA batteries. Note: Made by Bowmar.
Facts at a glance:
| Feature | Value |
|---|---|
| Type | Arithmetic |
| Functions | 4 |
| Keys | 17 |
| Precision | 8 |
| Logic | Algebraic |
| Display type | LED |
| Length | 158mm |
| Width | 77mm |
| Thickness | 32mm |
| Weight | 142g |
| Power Source | 3xAA batteries |
| Year introduced | 1973 |
| Year discontinued | 1974 |
Replacements:
If you have a Sears 728.58821 that is no longer working, you can first try replacing the 3xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent.
We suggest the following current models as possible replacements: