JZK PC2810 Professional Digital Sport Stopwatch User Manual

1. Introduction

This manual provides detailed instructions for the JZK PC2810 Professional Digital Sport Stopwatch. It covers the setup, operation of its various modes including normal time, chronograph, countdown timer, and alarm, as well as maintenance and troubleshooting. Please read this manual thoroughly to ensure proper use and longevity of your device.

2. Product Features

The JZK PC2810 stopwatch is a versatile device designed for various timing needs, including sports and daily use. Key features include:

Normal Time Display: Shows hours, minutes, seconds, and calendar (day, month, date).
Alarm and Chime: Programmable alarm and hourly chime function.
12/24 Hour Format: Selectable time display format.
Chronograph (Stopwatch): Measures lap time, split time, and total elapsed time with 1/100 second accuracy up to 10 hours.
10 Memory Records: Stores up to 10 lap/split times for review.
Performance Analysis: Displays fastest, slowest, and average lap times from memory.
Countdown Timer: Functions as a countdown timer, settable up to 10 hours.
Durable Construction: Made from ABS plastic.
Lanyard Included: For convenient carrying.

3. Package Contents

Upon unpacking, please ensure all items are present:

1 x JZK PC2810 Digital Sport Stopwatch
1 x Lanyard
1 x English User Manual
1 x CR-2032 Lithium Button Cell Battery (pre-installed or included separately)

4. Product Overview

Front view of the JZK PC2810 digital stopwatch, dark gray with a large display and three buttons on top.

Angled view of the JZK PC2810 digital stopwatch, showing the display with 'PC2810' printed below it, and various function labels around the screen.

Back view of the JZK PC2810 digital stopwatch, showing a 'QC 2014 passed' sticker and screw points.

JZK PC2810 digital stopwatch with dimensions — JZK PC2810 digital stopwatch with a black lanyard, displaying its dimensions: 8.2 cm length and 6.2 cm width.

Hand holding the JZK PC2810 digital stopwatch — A hand holding the JZK PC2810 digital stopwatch, demonstrating its ergonomic size and grip.

5. Setup

5.1. Battery Installation

The JZK PC2810 stopwatch uses one CR2032 lithium button cell battery. If the display is dim or blank, the battery may need to be installed or replaced.

Locate the battery compartment on the back of the stopwatch.
Using a small screwdriver, carefully remove the screws securing the battery cover.
Insert the CR2032 battery with the positive (+) side facing up.
Replace the battery cover and secure it with the screws.

Battery installation for JZK PC2810 stopwatch — Image illustrating the correct way to install the CR2032 battery into the stopwatch compartment.

5.2. Initial Power-On

After battery installation, the stopwatch should power on automatically. If not, press any button to activate the display.

6. Operating Instructions

The stopwatch typically has buttons labeled MODE, START/STOP, LAP/RESET, RECALL, SET, and SELECT. Refer to the labels on your device for specific button functions.

6.1. Normal Time Mode

This mode displays the current time and date.

Press the MODE button until the normal time display is shown.
To set the time and date:

In Normal Time Mode, press and hold the SET button until the digits flash.
Use the SELECT button to cycle through hours, minutes, seconds, month, date, and day.
Use the START/STOP button to adjust the flashing value.
Press SET again to confirm and exit setting mode.

To switch between 12/24 hour format, press the START/STOP button while in Normal Time Mode (not in setting mode).

6.2. Chronograph (Stopwatch) Mode

This mode is used for measuring elapsed time, lap times, and split times.

Press the MODE button until 'STOP-W' or 'CHRONO' is displayed.
Press START/STOP to begin timing.
To record a lap time: Press LAP/RESET while the stopwatch is running. The lap time will be displayed briefly, and the stopwatch will continue running in the background.
To record a split time: Press LAP/RESET to display the split time. Press LAP/RESET again to return to the running time.
Press START/STOP again to pause the timing.
Press START/STOP to resume timing, or press LAP/RESET to reset the stopwatch to zero.
To recall memory records (up to 10 laps):

After stopping the stopwatch, press the RECALL button.
Use the SELECT or START/STOP buttons to scroll through the stored lap and split times.
The display will also show the fastest, slowest, and average lap times.
Press RECALL again to exit memory recall.

6.3. Countdown Timer Mode

This mode allows you to set a specific time for the stopwatch to count down from.

Press the MODE button until 'TIMER' or 'COUNTDOWN' is displayed.
To set the countdown time:

Press and hold the SET button until the digits flash.
Use the SELECT button to choose hours, minutes, or seconds.
Use the START/STOP button to adjust the flashing value.
Press SET again to confirm and exit setting mode.

Press START/STOP to begin the countdown.
Press START/STOP again to pause the countdown.
Press LAP/RESET to reset the countdown to the set time.
An alarm will sound when the countdown reaches zero.

6.4. Alarm Function

The stopwatch includes an alarm and an hourly chime function.

Press the MODE button until 'ALARM' is displayed.
To set the alarm time:

Press and hold the SET button until the alarm time digits flash.
Use the SELECT button to choose hours or minutes.
Use the START/STOP button to adjust the flashing value.
Press SET again to confirm and exit setting mode.

To activate/deactivate the alarm: In Alarm Mode, press the START/STOP button to toggle the alarm on or off. An alarm icon will appear/disappear on the display.
To activate/deactivate the hourly chime: In Alarm Mode, press the LAP/RESET button to toggle the chime on or off. A chime icon will appear/disappear.

7. Maintenance

7.1. Cleaning

Wipe the stopwatch with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the casing or display.

7.2. Battery Replacement

When the display becomes dim or unresponsive, replace the CR2032 battery following the instructions in Section 5.1. Ensure proper disposal of old batteries according to local regulations.

7.3. Storage

Store the stopwatch in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, consider removing the battery to prevent leakage.

8. Troubleshooting

Problem	Possible Cause	Solution
Display is blank or dim.	Low or dead battery; battery not installed correctly.	Replace the CR2032 battery (refer to Section 5.1). Ensure the battery is inserted with the correct polarity.
Time or date is incorrect.	Time/date not set or reset.	Set the time and date manually (refer to Section 6.1).
Stopwatch not responding to button presses.	Battery issue; internal malfunction.	Check or replace the battery. If the issue persists, contact customer support.

9. Specifications

Model: PC2810
Material: ABS Plastic
Battery: 1 x CR2032 Lithium Metal (included)
Dimensions (L x W x H): 8.2 x 6.2 x 2.3 cm (3.23 x 2.44 x 0.91 inches)
Weight: 65g (2.29 oz)
Display: 2-line digital display
Chronograph Accuracy: 1/100 second
Chronograph Capacity: Up to 10 hours
Memory: 10 lap/split records
Countdown Timer Capacity: Up to 10 hours
Features: Normal Time, Chronograph, Countdown Timer, Alarm, Hourly Chime, 12/24 Hour Format.

10. Support

For further assistance or inquiries not covered in this manual, please contact JZK customer support. Keep your purchase receipt for warranty purposes, if applicable.

JZK PC2810