This manual introduces the use of 437/438/3208 watches, including the setting and use of time, date, alarm clock, stopwatch and calculator
This manual provides step‑by‑step instructions for operating the calculator watch, including basic arithmetic, setting daily alarms, configuring a second time zone, and using the stopwatch for elapsed, split‑time, and two‑competitor timing. It also describes how to adjust the time and calendar, switch between 12‑hour and 24‑hour formats, and mute or restore operation sounds.
The specifications section lists accuracy, display capabilities, measurement limits, and battery types for each model (CR2016 for 437/3208 and CR1616 for 438), along with estimated battery life under typical usage. This manual is written in Chinese.
| Calculator display digits | 8 digits (7 for negatives) |
|---|---|
| Stopwatch measurement limit | 23 h 59 min 59.99 s |
| Stopwatch resolution | 1/100 second |
In the time and calendar setting mode, press the C button to move the cursor to the time‑format field and select either 12‑hour or 24‑hour.
The stopwatch can measure up to 23 hours 59 minutes 59.99 seconds before it resets.