---
product_id: 254091426
title: "Casio Unisex Youth Digital Watch F-91Ws-4Df"
brand: "casio"
price: "¥6615"
currency: JPY
in_stock: false
reviews_count: 11
url: https://www.desertcart.jp/products/254091426-casio-unisex-youth-digital-watch-f-91ws-4df
store_origin: JP
region: Japan
---

# Auto-calendar for hassle-free timekeeping Long-lasting lithium battery included 1/100-second stopwatch precision Casio Unisex Youth Digital Watch F-91Ws-4Df

**Brand:** casio
**Price:** ¥6615
**Availability:** ❌ Out of Stock

## Summary

> ⌚ Timeless precision, powered for your fast-paced life!

## Quick Answers

- **What is this?** Casio Unisex Youth Digital Watch F-91Ws-4Df by casio
- **How much does it cost?** ¥6615 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/254091426-casio-unisex-youth-digital-watch-f-91ws-4df)

## Best For

- casio enthusiasts

## Why This Product

- Trusted casio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Daily Wear:** Lightweight (21g) and durable design built to keep up with your dynamic lifestyle.
- • **Reliable Power Source:** Includes a long-lasting lithium metal battery so you’re always powered up and ready.
- • **Iconic Style Meets Function:** Timeless Casio design that’s both unisex and youth-approved—perfect for everyday wear and making a statement.
- • **Stay Ahead with Auto-Calendar:** Never miss a beat with the built-in auto-calendar that keeps your schedule on track.
- • **Precision Timing at Your Fingertips:** Experience ultra-accurate 1/100-second stopwatch functionality for all your timing needs.

## Overview

The Casio Unisex Youth Digital Watch F-91WS-4DF combines classic, durable design with modern functionality including a 1/100-second stopwatch, hourly time signal, and an auto-calendar. Lightweight and powered by an included lithium battery, it’s a reliable, stylish choice for professionals and trendsetters alike.

## Description

Casio Unisex Youth Digital Watch F-91WS-4DF

Review: good purchase - kids love it
Review: The only flaw is a weak light - Unless you intend to use this product in complete darkness there is absolutely no issue with this the watch, Ive gotten3-4 Colors and ive loved them all great price and a great everyday wear

## Features

- Hourly time signal
- Its durability and dynamic design
- 1/100-Second stopwatch
- Regular time keeping
- The auto-calendar

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B089B5KMX4 |
| Batteries  | 1 Lithium Metal batteries required. (included) |
| Best Sellers Rank | #61,221 in Fashion ( See Top 100 in Fashion ) #117 in Boys' Wrist Watches |
| Customer reviews | 4.7 4.7 out of 5 stars (268) |
| Date First Available  | 27 May 2020 |
| Department  | unisex-adult |
| Item model number  | F-91WS-4DF |
| Language  | English |
| Manufacturer  | Casio |
| Product Dimensions  | 20 x 20 x 20 cm; 21 g |

## Images

![Casio Unisex Youth Digital Watch F-91Ws-4Df - Image 1](https://m.media-amazon.com/images/I/21XLJ0r-TRL.jpg)
![Casio Unisex Youth Digital Watch F-91Ws-4Df - Image 2](https://m.media-amazon.com/images/I/31+CpiynaqL.jpg)
![Casio Unisex Youth Digital Watch F-91Ws-4Df - Image 3](https://m.media-amazon.com/images/I/31PZ5sRIllL.jpg)
![Casio Unisex Youth Digital Watch F-91Ws-4Df - Image 4](https://m.media-amazon.com/images/I/31Y7pjpynuL.jpg)
![Casio Unisex Youth Digital Watch F-91Ws-4Df - Image 5](https://m.media-amazon.com/images/I/31oNQ0Mo1OL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ good purchase
*by N***O on 26 August 2025*

kids love it

### ⭐⭐⭐⭐ The only flaw is a weak light
*by Z***O on 3 October 2022*

Unless you intend to use this product in complete darkness there is absolutely no issue with this the watch, Ive gotten3-4 Colors and ive loved them all great price and a great everyday wear

### ⭐⭐⭐ Trendy
*by A***L on 12 May 2024*

Bought it for wife, found to be trendy

## Frequently Bought Together

- Casio Unisex Youth Digital Watch F-91Ws-4Df
- Casio Classic Alarm Digital Watch
- Casio Digital Watch: F-91W Unisex

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**Shop now:** [https://www.desertcart.jp/products/254091426-casio-unisex-youth-digital-watch-f-91ws-4df](https://www.desertcart.jp/products/254091426-casio-unisex-youth-digital-watch-f-91ws-4df)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-24*