# DIY electronic wristwatch kit, with bracelet, LED, 3V, THT

> DIY kit for assembling an electronic wristwatch with red LED display and transparent case, silicone strap. Requires THT soldering, through-hole components, no printed instructions (markings on PCB). Powered by 3V DC, CR2032 battery not included, integrated PIC 16F631. Features: time display on button press, automatic sleep after 10s, 12/24h mode, stopwatch, countdown. Case size 52.5x39.5x18.1 mm.

- Page: https://sigmanortec.ro/en/diy-electronic-wristwatch-kit-with-bracelet-led-3v-tht
- Price: 48.15 RON
- Availability: Out of stock
- Reference: 9666 · EAN: 5946334023870
- Category: Mechatronics and IoT > Electronic Clocks
- Specifications: Input Voltage: 3 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.063 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:33 (Europe/Bucharest)

## Description

DIY kit for assembling a digital wristwatch with red LED display, ideal for learning THT soldering and educational projects. Includes PCB with markings, transparent case and silicone strap for comfortable wearing. Displays the time at the press of a button and automatically goes into sleep for low consumption, offers 12/24h mode, stopwatch and countdown, 3V power supply with button battery.
The LED Watch Kit is the perfect choice for electronics enthusiasts who want to build their own digital wristwatch, with a red LED display and a transparent case that shows off all the components. Designed for easy soldering with insert components, this kit offers a fun and educational DIY experience, and is also suitable for beginners who want to practice soldering on a board.
The watch displays the time at the touch of a button, then automatically goes into sleep mode to save power, and the silicone strap sits comfortably on your wrist for a modern and vibrant look. Plus, you have useful functions like 12-hour or 24-hour switching, countdown, stopwatch, and quick mode switching from the buttons.
ATTENTION: This kit requires THT soldering . The picture of the assembled clock in the second picture is for presentation purposes only! The package contains unassembled elements.
It comes equipped with a Red digital LED display, which provides a clear view of the time in digital format. The digital display ensures a quick and accurate time reading.
The kit includes all the components needed to assemble the electronic clock, including printed circuit board (PCB), LEDs, microcontroller, resistors, button and more.
The transparent plastic case protects the watch and gives it a look that allows you to see the internal components. The case can be attached to your wrist using the included strap.
The assembly is done according to the markings on the PCB board. The kit does not come with written or assembly instructions or a wiring diagram. All information regarding the location of the components is printed directly on the board.
The clock operates at a voltage of 3V, allowing the use of a conventional CR2025 battery or a dedicated power supply. The CR2032 battery is NOT included in the package .
Specifications:
Power supply: 3V DC (CR2032 battery or power supply not included )
Display: Digital LED
Display characters: XX:XX .
Integrated: PIC 16F631
Housing material: Transparent plastic, acrylic
Assembly: THT
Sleep Mode: 10 seconds after waking up
Strap: Silicone
Color: Usually Black, but may vary without notice
Strap size: 90 mm width + 120 mm length
Case size: 52.5 x 39.5 x 18.1 mm
Use:
Assembly: you need your own soldering tools and a minimum soldering knowledge base is recommended for proper assembly.
Press any button to display the time, the display will automatically turn off after approximately 10 seconds.
Change mode: long press S1 and S2 simultaneously.
Available modes: time display, time setting, sleep setting, 12-hour or 24-hour switching, countdown, stopwatch.
Automatic sleep: In display mode, short press S1 or S2 and if there is no operation for about 10 seconds, the watch will automatically enter sleep.
Time adjustment: in setting mode, short or long press S1 for minutes and S2 for hours.
Automatic sleep switch: in sleep setting mode, short press S1 or S2.
Switch 12 hours or 24 hours: in dedicated mode, short press S1 or S2.
Kit Contents:
No. | compound | bookmark | Amount
1 | 1KΩ in-line resistor | R1, R2 | 2
2 | Ceramic capacitor 22pF | C1, C2 | 2
3 | Ceramic capacitor 104 | 3 | 1
4 | 32.768KHz crystal oscillator | Y1 | 1
5 | Button battery holder | BT1 | 1
6 | LED tube digital display | SMG1 | 1
7 | MCU | U1 | 1
8 | Buttons | S1, S2 | 2
9 | PCB board | / | 1
10 | Instruction manual | / | 1
11 | Housing | / | 1
12 | Watch strap | / | 1
13 | Screw set | / | 1
Electronic diagram: